18972476315 has 32 divisors (see below), whose sum is σ = 26641305600. Its totient is φ = 12844863360.

The previous prime is 18972476293. The next prime is 18972476329. The reversal of 18972476315 is 51367427981.

It is not a de Polignac number, because 18972476315 - 2¹² = 18972472219 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209495 + ... + 286064.

It is an arithmetic number, because the mean of its divisors is an integer number (832540800).

Almost surely, 2^18972476315 is an apocalyptic number.

18972476315 is a deficient number, since it is larger than the sum of its proper divisors (7668829285).

18972476315 is a wasteful number, since it uses less digits than its factorization.

18972476315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495627.

The product of its digits is 2540160, while the sum is 53.

The spelling of 18972476315 in words is "eighteen billion, nine hundred seventy-two million, four hundred seventy-six thousand, three hundred fifteen".