38731563388 has 24 divisors (see below), whose sum is σ = 78215201792. Its totient is φ = 16438082544.

The previous prime is 38731563323. The next prime is 38731563413. The reversal of 38731563388 is 88336513783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6712020 + ... + 6717787.

Almost surely, 2^38731563388 is an apocalyptic number.

It is an amenable number.

38731563388 is an abundant number, since it is smaller than the sum of its proper divisors (39483638404).

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

38731563388 is a wasteful number, since it uses less digits than its factorization.

38731563388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13429921 (or 13429919 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The spelling of 38731563388 in words is "thirty-eight billion, seven hundred thirty-one million, five hundred sixty-three thousand, three hundred eighty-eight".