3981863564 has 12 divisors (see below), whose sum is σ = 7963727184. Its totient is φ = 1706512944.

The previous prime is 3981863527. The next prime is 3981863579. The reversal of 3981863564 is 4653681893.

3981863564 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71104679 + ... + 71104734.

It is an arithmetic number, because the mean of its divisors is an integer number (663643932).

Almost surely, 2^3981863564 is an apocalyptic number.

It is an amenable number.

3981863564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3981863564 is a wasteful number, since it uses less digits than its factorization.

3981863564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142209424 (or 142209422 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 53.

The square root of 3981863564 is about 63102.0091914671. The cubic root of 3981863564 is about 1584.9982670058.

The spelling of 3981863564 in words is "three billion, nine hundred eighty-one million, eight hundred sixty-three thousand, five hundred sixty-four".