18422172196 has 12 divisors (see below), whose sum is σ = 34135201548. Its totient is φ = 8669257472.

The previous prime is 18422172191. The next prime is 18422172221. The reversal of 18422172196 is 69127122481.

It can be written as a sum of positive squares in 2 ways, for example, as 11733222400 + 6688949796 = 108320^2 + 81786^2 .

It is not an unprimeable number, because it can be changed into a prime (18422172191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135457081 + ... + 135457216.

It is an arithmetic number, because the mean of its divisors is an integer number (2844600129).

Almost surely, 2^18422172196 is an apocalyptic number.

It is an amenable number.

18422172196 is a deficient number, since it is larger than the sum of its proper divisors (15713029352).

18422172196 is a wasteful number, since it uses less digits than its factorization.

18422172196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270914318 (or 270914316 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The spelling of 18422172196 in words is "eighteen billion, four hundred twenty-two million, one hundred seventy-two thousand, one hundred ninety-six".