1380188112 has 80 divisors (see below), whose sum is σ = 3783775680. Its totient is φ = 432019456.

The previous prime is 1380188111. The next prime is 1380188113. The reversal of 1380188112 is 2118810831.

It is an interprime number because it is at equal distance from previous prime (1380188111) and next prime (1380188113).

It is a super-2 number, since 2×1380188112² = 3809838449012249088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380188111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413683 + ... + 417005.

It is an arithmetic number, because the mean of its divisors is an integer number (47297196).

Almost surely, 2^1380188112 is an apocalyptic number.

1380188112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380188112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1891887840).

1380188112 is an abundant number, since it is smaller than the sum of its proper divisors (2403587568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1380188112 is a wasteful number, since it uses less digits than its factorization.

1380188112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3860 (or 3854 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 33.

The square root of 1380188112 is about 37150.8830581455. The cubic root of 1380188112 is about 1113.3868666415.

Adding to 1380188112 its reverse (2118810831), we get a palindrome (3498998943).

The spelling of 1380188112 in words is "one billion, three hundred eighty million, one hundred eighty-eight thousand, one hundred twelve".