38105407938 has 32 divisors (see below), whose sum is σ = 82485648000. Its totient is φ = 11665817856.

The previous prime is 38105407927. The next prime is 38105407961. The reversal of 38105407938 is 83970450183.

It is a super-2 number, since 2×38105407938² (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 15 ways as a sum of consecutive naturals, for example, 1211943 + ... + 1242986.

It is an arithmetic number, because the mean of its divisors is an integer number (2577676500).

Almost surely, 2^38105407938 is an apocalyptic number.

38105407938 is an abundant number, since it is smaller than the sum of its proper divisors (44380240062).

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

38105407938 is a wasteful number, since it uses less digits than its factorization.

38105407938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455146.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 38105407938 in words is "thirty-eight billion, one hundred five million, four hundred seven thousand, nine hundred thirty-eight".