18156970204 has 12 divisors (see below), whose sum is σ = 31778019504. Its totient is φ = 9077536064.

The previous prime is 18156970159. The next prime is 18156970211. The reversal of 18156970204 is 40207965181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193309 + ... + 271444.

It is an arithmetic number, because the mean of its divisors is an integer number (2648168292).

Almost surely, 2^18156970204 is an apocalyptic number.

It is an amenable number.

18156970204 is a deficient number, since it is larger than the sum of its proper divisors (13621049300).

18156970204 is a wasteful number, since it uses less digits than its factorization.

18156970204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474524 (or 474522 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 18156970204 in words is "eighteen billion, one hundred fifty-six million, nine hundred seventy thousand, two hundred four".