18868868496 has 45 divisors (see below), whose sum is σ = 52811238571. Its totient is φ = 6289073376.

The previous prime is 18868868477. The next prime is 18868868507. The reversal of 18868868496 is 69486886881.

The square root of 18868868496 is 137364.

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

18868868496 is a `hidden beast` number, since 18 + 8 + 68 + 8 + 68 + 496 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 1642645 + ... + 1654091.

Almost surely, 2^18868868496 is an apocalyptic number.

18868868496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

18868868496 is the 137364-th square number.

It is an amenable number.

18868868496 is an abundant number, since it is smaller than the sum of its proper divisors (33942370075).

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

18868868496 is an frugal number, since it uses more digits than its factorization.

18868868496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22908 (or 11452 counting only the distinct ones).

The product of its digits is 254803968, while the sum is 72.

It can be divided in two parts, 18868 and 868496, that added together give a square (887364 = 942²).

The spelling of 18868868496 in words is "eighteen billion, eight hundred sixty-eight million, eight hundred sixty-eight thousand, four hundred ninety-six".