138815195 has 8 divisors (see below), whose sum is σ = 166708800. Its totient is φ = 110965120.

The previous prime is 138815177. The next prime is 138815203. The reversal of 138815195 is 591518831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138815195 - 2⁸ = 138814939 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3395 + ... + 17004.

It is an arithmetic number, because the mean of its divisors is an integer number (20838600).

Almost surely, 2^138815195 is an apocalyptic number.

138815195 is a deficient number, since it is larger than the sum of its proper divisors (27893605).

138815195 is a wasteful number, since it uses less digits than its factorization.

138815195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21765.

The product of its digits is 43200, while the sum is 41.

The square root of 138815195 is about 11781.9860380158. The cubic root of 138815195 is about 517.7804745023.

The spelling of 138815195 in words is "one hundred thirty-eight million, eight hundred fifteen thousand, one hundred ninety-five".