138807137 has 16 divisors (see below), whose sum is σ = 164851200. Its totient is φ = 114354240.

The previous prime is 138807133. The next prime is 138807143. The reversal of 138807137 is 731708831.

It is not a de Polignac number, because 138807137 - 2² = 138807133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138807137.

It is not an unprimeable number, because it can be changed into a prime (138807131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47087 + ... + 49947.

It is an arithmetic number, because the mean of its divisors is an integer number (10303200).

Almost surely, 2^138807137 is an apocalyptic number.

It is an amenable number.

138807137 is a deficient number, since it is larger than the sum of its proper divisors (26044063).

138807137 is a wasteful number, since it uses less digits than its factorization.

138807137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 138807137 is about 11781.6440703325. The cubic root of 138807137 is about 517.7704555324.

The spelling of 138807137 in words is "one hundred thirty-eight million, eight hundred seven thousand, one hundred thirty-seven".