138674313 has 24 divisors (see below), whose sum is σ = 203328840. Its totient is φ = 91065600.

The previous prime is 138674303. The next prime is 138674329. The reversal of 138674313 is 313476831.

It can be written as a sum of positive squares in 4 ways, for example, as 91929744 + 46744569 = 9588^2 + 6837^2 .

It is not a de Polignac number, because 138674313 - 2⁴ = 138674297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138674303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338853 + ... + 339261.

It is an arithmetic number, because the mean of its divisors is an integer number (8472035).

Almost surely, 2^138674313 is an apocalyptic number.

It is an amenable number.

138674313 is a deficient number, since it is larger than the sum of its proper divisors (64654527).

138674313 is a wasteful number, since it uses less digits than its factorization.

138674313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889 (or 886 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 138674313 is about 11776.0058169143. The cubic root of 138674313 is about 517.6052519938.

The spelling of 138674313 in words is "one hundred thirty-eight million, six hundred seventy-four thousand, three hundred thirteen".