8318872491 has 16 divisors (see below), whose sum is σ = 11254272000. Its totient is φ = 5465281248.

The previous prime is 8318872487. The next prime is 8318872511. The reversal of 8318872491 is 1942788138.

It is not a de Polignac number, because 8318872491 - 2² = 8318872487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8318873491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16501 + ... + 130038.

It is an arithmetic number, because the mean of its divisors is an integer number (703392000).

Almost surely, 2^8318872491 is an apocalyptic number.

8318872491 is a deficient number, since it is larger than the sum of its proper divisors (2935399509).

8318872491 is a wasteful number, since it uses less digits than its factorization.

8318872491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146818.

The product of its digits is 774144, while the sum is 51.

The square root of 8318872491 is about 91207.8532309581. The cubic root of 8318872491 is about 2026.2272693428.

The spelling of 8318872491 in words is "eight billion, three hundred eighteen million, eight hundred seventy-two thousand, four hundred ninety-one".