18995374008 has 48 divisors (see below), whose sum is σ = 55403176920. Its totient is φ = 5844730176.

The previous prime is 18995373979. The next prime is 18995374033. The reversal of 18995374008 is 80047359981.

18995374008 is a `hidden beast` number, since 18 + 99 + 537 + 4 + 0 + 0 + 8 = 666.

It is a super-3 number, since 3×18995374008³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10146166 + ... + 10148037.

Almost surely, 2^18995374008 is an apocalyptic number.

18995374008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18995374008 is an abundant number, since it is smaller than the sum of its proper divisors (36407802912).

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

18995374008 is a wasteful number, since it uses less digits than its factorization.

18995374008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20294228 (or 20294221 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 18995374008 in words is "eighteen billion, nine hundred ninety-five million, three hundred seventy-four thousand, eight".