1188483840 has 216 divisors, whose sum is σ = 4265443728. Its totient is φ = 316846080.

The previous prime is 1188483827. The next prime is 1188483841. The reversal of 1188483840 is 483848811.

1188483840 is a `hidden beast` number, since 11 + 88 + 483 + 84 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

It is a super-2 number, since 2×1188483840² = 2824987675882291200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1188483841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309130 + ... + 312950.

Almost surely, 2^1188483840 is an apocalyptic number.

1188483840 is a gapful number since it is divisible by the number (10) 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 1188483840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2132721864).

1188483840 is an abundant number, since it is smaller than the sum of its proper divisors (3076959888).

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

1188483840 is an frugal number, since it uses more digits than its factorization.

1188483840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857 (or 3831 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The square root of 1188483840 is about 34474.3939758192. The cubic root of 1188483840 is about 1059.2482625423.

The spelling of 1188483840 in words is "one billion, one hundred eighty-eight million, four hundred eighty-three thousand, eight hundred forty".