3903621864 has 16 divisors (see below), whose sum is σ = 9759054720. Its totient is φ = 1301207280.

The previous prime is 3903621857. The next prime is 3903621899. The reversal of 3903621864 is 4681263093.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81325432 + ... + 81325479.

It is an arithmetic number, because the mean of its divisors is an integer number (609940920).

Almost surely, 2^3903621864 is an apocalyptic number.

It is an amenable number.

3903621864 is an abundant number, since it is smaller than the sum of its proper divisors (5855432856).

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

3903621864 is a wasteful number, since it uses less digits than its factorization.

3903621864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162650920 (or 162650916 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 3903621864 is about 62478.9713743752. The cubic root of 3903621864 is about 1574.5480337818.

The spelling of 3903621864 in words is "three billion, nine hundred three million, six hundred twenty-one thousand, eight hundred sixty-four".