38318910138 has 64 divisors (see below), whose sum is σ = 85850219520. Its totient is φ = 12668576256.

The previous prime is 38318910053. The next prime is 38318910139. The reversal of 38318910138 is 83101981383.

It is a junction number, because it is equal to n+sod(n) for n = 38318910093 and 38318910102.

It is not an unprimeable number, because it can be changed into a prime (38318910139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15852706 + ... + 15855122.

It is an arithmetic number, because the mean of its divisors is an integer number (1341409680).

Almost surely, 2^38318910138 is an apocalyptic number.

38318910138 is an abundant number, since it is smaller than the sum of its proper divisors (47531309382).

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

38318910138 is a wasteful number, since it uses less digits than its factorization.

38318910138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4708 (or 4702 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 38318910138 in words is "thirty-eight billion, three hundred eighteen million, nine hundred ten thousand, one hundred thirty-eight".