38888917920 has 144 divisors (see below), whose sum is σ = 135794891232. Its totient is φ = 10129190400.

The previous prime is 38888917883. The next prime is 38888917931. The reversal of 38888917920 is 2971988883.

38888917920 is a `hidden beast` number, since 388 + 8 + 89 + 179 + 2 + 0 = 666.

38888917920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

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, 252106 + ... + 375945.

It is an arithmetic number, because the mean of its divisors is an integer number (943020078).

Almost surely, 2^38888917920 is an apocalyptic number.

38888917920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38888917920 is an abundant number, since it is smaller than the sum of its proper divisors (96905973312).

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

38888917920 is a wasteful number, since it uses less digits than its factorization.

38888917920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628115 (or 628104 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 63.

The spelling of 38888917920 in words is "thirty-eight billion, eight hundred eighty-eight million, nine hundred seventeen thousand, nine hundred twenty".