8137681604 has 24 divisors (see below), whose sum is σ = 15380631168. Its totient is φ = 3745020960.

The previous prime is 8137681597. The next prime is 8137681649. The reversal of 8137681604 is 4061867318.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207452 + ... + 243539.

It is an arithmetic number, because the mean of its divisors is an integer number (640859632).

Almost surely, 2^8137681604 is an apocalyptic number.

It is an amenable number.

8137681604 is a deficient number, since it is larger than the sum of its proper divisors (7242949564).

8137681604 is a wasteful number, since it uses less digits than its factorization.

8137681604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451355 (or 451353 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 8137681604 is about 90209.0993414744. The cubic root of 8137681604 is about 2011.4082689687.

The spelling of 8137681604 in words is "eight billion, one hundred thirty-seven million, six hundred eighty-one thousand, six hundred four".