18179479297 has 16 divisors (see below), whose sum is σ = 20987366400. Its totient is φ = 15424429392.

The previous prime is 18179479291. The next prime is 18179479349. The reversal of 18179479297 is 79297497181.

It is a cyclic number.

It is not a de Polignac number, because 18179479297 - 2⁷ = 18179479169 is a prime.

It is a super-2 number, since 2×18179479297² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18179479291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2374758 + ... + 2382400.

It is an arithmetic number, because the mean of its divisors is an integer number (1311710400).

Almost surely, 2^18179479297 is an apocalyptic number.

It is an amenable number.

18179479297 is a deficient number, since it is larger than the sum of its proper divisors (2807887103).

18179479297 is a wasteful number, since it uses less digits than its factorization.

18179479297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11052.

The product of its digits is 16003008, while the sum is 64.

The spelling of 18179479297 in words is "eighteen billion, one hundred seventy-nine million, four hundred seventy-nine thousand, two hundred ninety-seven".