18877376982 has 16 divisors (see below), whose sum is σ = 37757329920. Its totient is φ = 6292029672.

The previous prime is 18877376941. The next prime is 18877377047. The reversal of 18877376982 is 28967377881.

It is a super-3 number, since 3×18877376982³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4482 + ... + 194357.

It is an arithmetic number, because the mean of its divisors is an integer number (2359833120).

Almost surely, 2^18877376982 is an apocalyptic number.

18877376982 is an abundant number, since it is smaller than the sum of its proper divisors (18879952938).

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

18877376982 is a wasteful number, since it uses less digits than its factorization.

18877376982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214667.

The product of its digits is 56899584, while the sum is 66.

The spelling of 18877376982 in words is "eighteen billion, eight hundred seventy-seven million, three hundred seventy-six thousand, nine hundred eighty-two".