138315974 has 16 divisors (see below), whose sum is σ = 216851040. Its totient is φ = 66042240.

The previous prime is 138315949. The next prime is 138316007. The reversal of 138315974 is 479513831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30494 + ... + 34734.

It is an arithmetic number, because the mean of its divisors is an integer number (13553190).

Almost surely, 2^138315974 is an apocalyptic number.

138315974 is a deficient number, since it is larger than the sum of its proper divisors (78535066).

138315974 is a wasteful number, since it uses less digits than its factorization.

138315974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975.

The product of its digits is 90720, while the sum is 41.

The square root of 138315974 is about 11760.7811815372. The cubic root of 138315974 is about 517.1590310735.

The spelling of 138315974 in words is "one hundred thirty-eight million, three hundred fifteen thousand, nine hundred seventy-four".