3655167872 has 64 divisors (see below), whose sum is σ = 7502814000. Its totient is φ = 1772703744.

The previous prime is 3655167839. The next prime is 3655167899. The reversal of 3655167872 is 2787615563.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 3655167872.

It is a congruent number.

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, 817868 + ... + 822324.

Almost surely, 2^3655167872 is an apocalyptic number.

3655167872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3655167872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3751407000).

3655167872 is an abundant number, since it is smaller than the sum of its proper divisors (3847646128).

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

3655167872 is a wasteful number, since it uses less digits than its factorization.

3655167872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663 (or 4651 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 50.

The square root of 3655167872 is about 60457.9843527718. The cubic root of 3655167872 is about 1540.4080371519.

The spelling of 3655167872 in words is "three billion, six hundred fifty-five million, one hundred sixty-seven thousand, eight hundred seventy-two".