138845836 has 6 divisors (see below), whose sum is σ = 242980220. Its totient is φ = 69422916.

The previous prime is 138845827. The next prime is 138845873. The reversal of 138845836 is 638548831.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17355726 + ... + 17355733.

Almost surely, 2^138845836 is an apocalyptic number.

It is an amenable number.

138845836 is a deficient number, since it is larger than the sum of its proper divisors (104134384).

138845836 is a wasteful number, since it uses less digits than its factorization.

138845836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34711463 (or 34711461 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 138845836 is about 11783.2862988217. The cubic root of 138845836 is about 517.8185686613.

The spelling of 138845836 in words is "one hundred thirty-eight million, eight hundred forty-five thousand, eight hundred thirty-six".