18972219174 has 16 divisors (see below), whose sum is σ = 37955931312. Its totient is φ = 6322157568.

The previous prime is 18972219163. The next prime is 18972219187. The reversal of 18972219174 is 47191227981.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 457339 + ... + 497094.

It is an arithmetic number, because the mean of its divisors is an integer number (2372245707).

Almost surely, 2^18972219174 is an apocalyptic number.

18972219174 is an abundant number, since it is smaller than the sum of its proper divisors (18983712138).

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

18972219174 is a wasteful number, since it uses less digits than its factorization.

18972219174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957751.

The product of its digits is 508032, while the sum is 51.

The spelling of 18972219174 in words is "eighteen billion, nine hundred seventy-two million, two hundred nineteen thousand, one hundred seventy-four".