18716732976 has 40 divisors (see below), whose sum is σ = 49658363824. Its totient is φ = 6070291200.

The previous prime is 18716732959. The next prime is 18716732987. The reversal of 18716732976 is 67923761781.

It is a happy 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, 5267575 + ... + 5271126.

Almost surely, 2^18716732976 is an apocalyptic number.

18716732976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18716732976 is an abundant number, since it is smaller than the sum of its proper divisors (30941630848).

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

18716732976 is a wasteful number, since it uses less digits than its factorization.

18716732976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10538749 (or 10538743 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 57.

The spelling of 18716732976 in words is "eighteen billion, seven hundred sixteen million, seven hundred thirty-two thousand, nine hundred seventy-six".