18813272195 has 8 divisors (see below), whose sum is σ = 22576706160. Its totient is φ = 15050098080.

The previous prime is 18813272113. The next prime is 18813272201. The reversal of 18813272195 is 59127231881.

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

It is not a de Polignac number, because 18813272195 - 2²⁴ = 18796494979 is a prime.

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, 174725 + ... + 261065.

It is an arithmetic number, because the mean of its divisors is an integer number (2822088270).

Almost surely, 2^18813272195 is an apocalyptic number.

18813272195 is a deficient number, since it is larger than the sum of its proper divisors (3763433965).

18813272195 is an equidigital number, since it uses as much as digits as its factorization.

18813272195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129925.

The product of its digits is 241920, while the sum is 47.

The spelling of 18813272195 in words is "eighteen billion, eight hundred thirteen million, two hundred seventy-two thousand, one hundred ninety-five".