18179372315 has 32 divisors (see below), whose sum is σ = 24267382272. Its totient is φ = 12983040000.

The previous prime is 18179372279. The next prime is 18179372371. The reversal of 18179372315 is 51327397181.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-18179372315 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 18179372315.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5642405 + ... + 5645625.

It is an arithmetic number, because the mean of its divisors is an integer number (758355696).

Almost surely, 2^18179372315 is an apocalyptic number.

18179372315 is a deficient number, since it is larger than the sum of its proper divisors (6088009957).

18179372315 is a wasteful number, since it uses less digits than its factorization.

18179372315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6071.

The product of its digits is 317520, while the sum is 47.

The spelling of 18179372315 in words is "eighteen billion, one hundred seventy-nine million, three hundred seventy-two thousand, three hundred fifteen".