38131432920 has 96 divisors (see below), whose sum is σ = 141631045920. Its totient is φ = 8715755520.

The previous prime is 38131432903. The next prime is 38131432951. The reversal of 38131432920 is 2923413183.

38131432920 is a `hidden beast` number, since 3 + 8 + 131 + 432 + 92 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 7563241 + ... + 7568280.

It is an arithmetic number, because the mean of its divisors is an integer number (1475323395).

Almost surely, 2^38131432920 is an apocalyptic number.

38131432920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38131432920 is an abundant number, since it is smaller than the sum of its proper divisors (103499613000).

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

38131432920 is a wasteful number, since it uses less digits than its factorization.

38131432920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15131545 (or 15131538 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 38131432920 in words is "thirty-eight billion, one hundred thirty-one million, four hundred thirty-two thousand, nine hundred twenty".