138926315 has 8 divisors (see below), whose sum is σ = 181867248. Its totient is φ = 101037280.

The previous prime is 138926299. The next prime is 138926321. The reversal of 138926315 is 513629831.

It is a happy number.

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

It is not a de Polignac number, because 138926315 - 2⁴ = 138926299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262912 + ... + 1263021.

It is an arithmetic number, because the mean of its divisors is an integer number (22733406).

Almost surely, 2^138926315 is an apocalyptic number.

138926315 is a deficient number, since it is larger than the sum of its proper divisors (42940933).

138926315 is a wasteful number, since it uses less digits than its factorization.

138926315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525949.

The product of its digits is 38880, while the sum is 38.

The square root of 138926315 is about 11786.7007682388. The cubic root of 138926315 is about 517.9185967996.

The spelling of 138926315 in words is "one hundred thirty-eight million, nine hundred twenty-six thousand, three hundred fifteen".