38917123392 has 84 divisors (see below), whose sum is σ = 119779389600. Its totient is φ = 11119175424.

The previous prime is 38917123351. The next prime is 38917123397. The reversal of 38917123392 is 29332171983.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38917123397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2058892 + ... + 2077707.

Almost surely, 2^38917123392 is an apocalyptic number.

38917123392 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38917123392 is an abundant number, since it is smaller than the sum of its proper divisors (80862266208).

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

38917123392 is a wasteful number, since it uses less digits than its factorization.

38917123392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136628 (or 4136611 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The spelling of 38917123392 in words is "thirty-eight billion, nine hundred seventeen million, one hundred twenty-three thousand, three hundred ninety-two".