8371491984 has 60 divisors (see below), whose sum is σ = 23517738816. Its totient is φ = 2779874496.

The previous prime is 8371491929. The next prime is 8371492009. The reversal of 8371491984 is 4891941738.

8371491984 is a `hidden beast` number, since 8 + 3 + 71 + 491 + 9 + 84 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 8371491984.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72652 + ... + 148395.

Almost surely, 2^8371491984 is an apocalyptic number.

It is an amenable number.

8371491984 is an abundant number, since it is smaller than the sum of its proper divisors (15146246832).

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

8371491984 is a wasteful number, since it uses less digits than its factorization.

8371491984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221324 (or 221315 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 8371491984 is about 91495.8577423044. The cubic root of 8371491984 is about 2030.4904688194.

The spelling of 8371491984 in words is "eight billion, three hundred seventy-one million, four hundred ninety-one thousand, nine hundred eighty-four".