138756365 has 16 divisors (see below), whose sum is σ = 184208256. Its totient is φ = 99489600.

The previous prime is 138756353. The next prime is 138756407. The reversal of 138756365 is 563657831.

It is not a de Polignac number, because 138756365 - 2⁴ = 138756349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13862 + ... + 21671.

It is an arithmetic number, because the mean of its divisors is an integer number (11513016).

Almost surely, 2^138756365 is an apocalyptic number.

It is an amenable number.

138756365 is a deficient number, since it is larger than the sum of its proper divisors (45451891).

138756365 is a wasteful number, since it uses less digits than its factorization.

138756365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35620.

The product of its digits is 453600, while the sum is 44.

The square root of 138756365 is about 11779.4891654944. The cubic root of 138756365 is about 517.7073188955.

The spelling of 138756365 in words is "one hundred thirty-eight million, seven hundred fifty-six thousand, three hundred sixty-five".