1016403388 has 144 divisors (see below), whose sum is σ = 2462487552. Its totient is φ = 357033600.

The previous prime is 1016403383. The next prime is 1016403391. The reversal of 1016403388 is 8833046101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016403383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2069823 + ... + 2070313.

It is an arithmetic number, because the mean of its divisors is an integer number (17100608).

Almost surely, 2^1016403388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1016403388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231243776).

1016403388 is an abundant number, since it is smaller than the sum of its proper divisors (1446084164).

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

1016403388 is a wasteful number, since it uses less digits than its factorization.

1016403388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1016403388 is about 31881.0819766206. The cubic root of 1016403388 is about 1005.4381687122.

Adding to 1016403388 its reverse (8833046101), we get a palindrome (9849449489).

It can be divided in two parts, 1016 and 403388, that added together give a palindrome (404404).

The spelling of 1016403388 in words is "one billion, sixteen million, four hundred three thousand, three hundred eighty-eight".