18874912996 has 27 divisors (see below), whose sum is σ = 33525404283. Its totient is φ = 9298284480.

The previous prime is 18874912967. The next prime is 18874912997. The reversal of 18874912996 is 69921947881.

It is a happy number.

The square root of 18874912996 is 137386.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 667188900 + 18207724096 = 25830^2 + 134936^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18874912997) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20057886 + ... + 20058826.

Almost surely, 2^18874912996 is an apocalyptic number.

18874912996 is the 137386-th square number.

It is an amenable number.

18874912996 is a deficient number, since it is larger than the sum of its proper divisors (14650491287).

18874912996 is an frugal number, since it uses more digits than its factorization.

18874912996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032 (or 1016 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 64.

Multiplying 18874912996 by its sum of digits (64), we get a square (1207994431744 = 1099088²).

The spelling of 18874912996 in words is "eighteen billion, eight hundred seventy-four million, nine hundred twelve thousand, nine hundred ninety-six".