138617675 has 12 divisors (see below), whose sum is σ = 196441296. Its totient is φ = 95052000.

The previous prime is 138617669. The next prime is 138617683. The reversal of 138617675 is 576716831.

It is not a de Polignac number, because 138617675 - 2⁴ = 138617659 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395876 + ... + 396225.

It is an arithmetic number, because the mean of its divisors is an integer number (16370108).

Almost surely, 2^138617675 is an apocalyptic number.

138617675 is a deficient number, since it is larger than the sum of its proper divisors (57823621).

138617675 is an equidigital number, since it uses as much as digits as its factorization.

138617675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792118 (or 792113 counting only the distinct ones).

The product of its digits is 211680, while the sum is 44.

The square root of 138617675 is about 11773.6007661208. The cubic root of 138617675 is about 517.5347748264.

The spelling of 138617675 in words is "one hundred thirty-eight million, six hundred seventeen thousand, six hundred seventy-five".