138851156 has 6 divisors (see below), whose sum is σ = 242989530. Its totient is φ = 69425576.

The previous prime is 138851129. The next prime is 138851179. The reversal of 138851156 is 651158831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 136095556 + 2755600 = 11666^2 + 1660^2 .

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, 17356391 + ... + 17356398.

It is an arithmetic number, because the mean of its divisors is an integer number (40498255).

Almost surely, 2^138851156 is an apocalyptic number.

It is an amenable number.

138851156 is a deficient number, since it is larger than the sum of its proper divisors (104138374).

138851156 is a wasteful number, since it uses less digits than its factorization.

138851156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34712793 (or 34712791 counting only the distinct ones).

The product of its digits is 28800, while the sum is 38.

The square root of 138851156 is about 11783.5120401347. The cubic root of 138851156 is about 517.8251821344.

The spelling of 138851156 in words is "one hundred thirty-eight million, eight hundred fifty-one thousand, one hundred fifty-six".