18170814772 has 12 divisors (see below), whose sum is σ = 34689737376. Its totient is φ = 8259461240.

The previous prime is 18170814743. The next prime is 18170814791. The reversal of 18170814772 is 27741807181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206486488 + ... + 206486575.

It is an arithmetic number, because the mean of its divisors is an integer number (2890811448).

Almost surely, 2^18170814772 is an apocalyptic number.

It is an amenable number.

18170814772 is a deficient number, since it is larger than the sum of its proper divisors (16518922604).

18170814772 is a wasteful number, since it uses less digits than its factorization.

18170814772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412973078 (or 412973076 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 46.

The spelling of 18170814772 in words is "eighteen billion, one hundred seventy million, eight hundred fourteen thousand, seven hundred seventy-two".