8108637636 has 48 divisors (see below), whose sum is σ = 21305991168. Its totient is φ = 2377898400.

The previous prime is 8108637631. The next prime is 8108637661. The reversal of 8108637636 is 6367368018.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8108637631) 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, 986700 + ... + 994883.

It is an arithmetic number, because the mean of its divisors is an integer number (443874816).

Almost surely, 2^8108637636 is an apocalyptic number.

It is an amenable number.

8108637636 is an abundant number, since it is smaller than the sum of its proper divisors (13197353532).

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

8108637636 is a wasteful number, since it uses less digits than its factorization.

8108637636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981632 (or 1981630 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 8108637636 is about 90047.9740804867. The cubic root of 8108637636 is about 2009.0124630852.

The spelling of 8108637636 in words is "eight billion, one hundred eight million, six hundred thirty-seven thousand, six hundred thirty-six".