18036604722 has 8 divisors (see below), whose sum is σ = 36073209456. Its totient is φ = 6012201572.

The previous prime is 18036604697. The next prime is 18036604757. The reversal of 18036604722 is 22740663081.

It is a happy number.

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

18036604722 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503050388 + ... + 1503050399.

It is an arithmetic number, because the mean of its divisors is an integer number (4509151182).

Almost surely, 2^18036604722 is an apocalyptic number.

18036604722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18036604722 is a wasteful number, since it uses less digits than its factorization.

18036604722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006100792.

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 18036604722 in words is "eighteen billion, thirty-six million, six hundred four thousand, seven hundred twenty-two".