38615198916 has 72 divisors (see below), whose sum is σ = 109369794240. Its totient is φ = 10553218368.

The previous prime is 38615198857. The next prime is 38615198933. The reversal of 38615198916 is 61989151683.

38615198916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×38615198916² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1414131 + ... + 1441178.

It is an arithmetic number, because the mean of its divisors is an integer number (1519024920).

Almost surely, 2^38615198916 is an apocalyptic number.

It is an amenable number.

38615198916 is an abundant number, since it is smaller than the sum of its proper divisors (70754595324).

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

38615198916 is a wasteful number, since it uses less digits than its factorization.

38615198916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855353 (or 2855344 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 57.

The spelling of 38615198916 in words is "thirty-eight billion, six hundred fifteen million, one hundred ninety-eight thousand, nine hundred sixteen".