1138876688 has 20 divisors (see below), whose sum is σ = 2207097948. Its totient is φ = 569303040.

The previous prime is 1138876681. The next prime is 1138876741. The reversal of 1138876688 is 8866788311.

It can be written as a sum of positive squares in 2 ways, for example, as 621405184 + 517471504 = 24928^2 + 22748^2 .

It is a super-2 number, since 2×1138876688² = 2594080220939698688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1138876681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121448 + ... + 130488.

Almost surely, 2^1138876688 is an apocalyptic number.

It is an amenable number.

1138876688 is a deficient number, since it is larger than the sum of its proper divisors (1068221260).

1138876688 is an equidigital number, since it uses as much as digits as its factorization.

1138876688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16922 (or 16916 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 56.

The square root of 1138876688 is about 33747.2471173576. The cubic root of 1138876688 is about 1044.3006967938.

The spelling of 1138876688 in words is "one billion, one hundred thirty-eight million, eight hundred seventy-six thousand, six hundred eighty-eight".