138812764 has 6 divisors (see below), whose sum is σ = 242922344. Its totient is φ = 69406380.

The previous prime is 138812753. The next prime is 138812771. The reversal of 138812764 is 467218831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17351592 + ... + 17351599.

Almost surely, 2^138812764 is an apocalyptic number.

It is an amenable number.

138812764 is a deficient number, since it is larger than the sum of its proper divisors (104109580).

138812764 is a wasteful number, since it uses less digits than its factorization.

138812764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34703195 (or 34703193 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 138812764 is about 11781.8828715957. The cubic root of 138812764 is about 517.7774519425. Note that the first 3 decimals are identical.

The spelling of 138812764 in words is "one hundred thirty-eight million, eight hundred twelve thousand, seven hundred sixty-four".