18327583980 has 72 divisors (see below), whose sum is σ = 55637836800. Its totient is φ = 4883473152.

The previous prime is 18327583973. The next prime is 18327583987. The reversal of 18327583980 is 8938572381.

18327583980 is a `hidden beast` number, since 183 + 2 + 75 + 8 + 398 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (18327583973) and next prime (18327583987).

It is not an unprimeable number, because it can be changed into a prime (18327583987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190416 + ... + 270024.

Almost surely, 2^18327583980 is an apocalyptic number.

18327583980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18327583980 is an abundant number, since it is smaller than the sum of its proper divisors (37310252820).

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

18327583980 is a wasteful number, since it uses less digits than its factorization.

18327583980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80903 (or 80898 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 18327583980 in words is "eighteen billion, three hundred twenty-seven million, five hundred eighty-three thousand, nine hundred eighty".