38131938 has 32 divisors (see below), whose sum is σ = 91257600. Its totient is φ = 11732688.

The previous prime is 38131937. The next prime is 38131949. The reversal of 38131938 is 83913183.

It is not an unprimeable number, because it can be changed into a prime (38131937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26458 + ... + 27861.

It is an arithmetic number, because the mean of its divisors is an integer number (2851800).

Almost surely, 2^38131938 is an apocalyptic number.

38131938 is an abundant number, since it is smaller than the sum of its proper divisors (53125662).

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

38131938 is a wasteful number, since it uses less digits than its factorization.

38131938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54343 (or 54337 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 38131938 is about 6175.1063148743. The cubic root of 38131938 is about 336.5861897416.

The spelling of 38131938 in words is "thirty-eight million, one hundred thirty-one thousand, nine hundred thirty-eight".