18516497379 has 8 divisors (see below), whose sum is σ = 24782537472. Its totient is φ = 12297394440.

The previous prime is 18516497353. The next prime is 18516497381. The reversal of 18516497379 is 97379461581.

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

It is not a de Polignac number, because 18516497379 - 2⁵ = 18516497347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18516497399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11733367 + ... + 11734944.

It is an arithmetic number, because the mean of its divisors is an integer number (3097817184).

Almost surely, 2^18516497379 is an apocalyptic number.

18516497379 is a deficient number, since it is larger than the sum of its proper divisors (6266040093).

18516497379 is a wasteful number, since it uses less digits than its factorization.

18516497379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23468577.

The product of its digits is 11430720, while the sum is 60.

The spelling of 18516497379 in words is "eighteen billion, five hundred sixteen million, four hundred ninety-seven thousand, three hundred seventy-nine".