138274786936 has 32 divisors (see below), whose sum is σ = 304591316400. Its totient is φ = 58017392640.

The previous prime is 138274786901. The next prime is 138274786999. The reversal of 138274786936 is 639687472831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60433641 + ... + 60435928.

Almost surely, 2^138274786936 is an apocalyptic number.

It is an amenable number.

138274786936 is an abundant number, since it is smaller than the sum of its proper divisors (166316529464).

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

138274786936 is a wasteful number, since it uses less digits than its factorization.

138274786936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120869599 (or 120869595 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 64.

The spelling of 138274786936 in words is "one hundred thirty-eight billion, two hundred seventy-four million, seven hundred eighty-six thousand, nine hundred thirty-six".