138313264 has 20 divisors (see below), whose sum is σ = 268248456. Its totient is φ = 69087872.

The previous prime is 138313181. The next prime is 138313271. The reversal of 138313264 is 462313831.

138313264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14892 + ... + 22324.

Almost surely, 2^138313264 is an apocalyptic number.

It is an amenable number.

138313264 is a deficient number, since it is larger than the sum of its proper divisors (129935192).

138313264 is a wasteful number, since it uses less digits than its factorization.

138313264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8604 (or 8598 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 138313264 is about 11760.6659675377. The cubic root of 138313264 is about 517.1556535168.

The spelling of 138313264 in words is "one hundred thirty-eight million, three hundred thirteen thousand, two hundred sixty-four".