3691636872 has 96 divisors (see below), whose sum is σ = 11711913120. Its totient is φ = 958863360.

The previous prime is 3691636789. The next prime is 3691636913. The reversal of 3691636872 is 2786361963.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129753 + ... + 155624.

It is an arithmetic number, because the mean of its divisors is an integer number (121999095).

Almost surely, 2^3691636872 is an apocalyptic number.

It is an amenable number.

3691636872 is an abundant number, since it is smaller than the sum of its proper divisors (8020276248).

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

3691636872 is a wasteful number, since it uses less digits than its factorization.

3691636872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285411 (or 285400 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 51.

The square root of 3691636872 is about 60758.8419244475. The cubic root of 3691636872 is about 1545.5141716150.

The spelling of 3691636872 in words is "three billion, six hundred ninety-one million, six hundred thirty-six thousand, eight hundred seventy-two".