8192991980 has 24 divisors (see below), whose sum is σ = 17215007712. Its totient is φ = 3275344512.

The previous prime is 8192991973. The next prime is 8192992051. The reversal of 8192991980 is 891992918.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

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, 79217 + ... + 150536.

It is an arithmetic number, because the mean of its divisors is an integer number (717291988).

Almost surely, 2^8192991980 is an apocalyptic number.

It is an amenable number.

8192991980 is an abundant number, since it is smaller than the sum of its proper divisors (9022015732).

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

8192991980 is a wasteful number, since it uses less digits than its factorization.

8192991980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231545 (or 231543 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 56.

The square root of 8192991980 is about 90515.1477930628. The cubic root of 8192991980 is about 2015.9550448083.

The spelling of 8192991980 in words is "eight billion, one hundred ninety-two million, nine hundred ninety-one thousand, nine hundred eighty".