3974651984 has 20 divisors (see below), whose sum is σ = 7748138016. Its totient is φ = 1975132512.

The previous prime is 3974651939. The next prime is 3974652001. The reversal of 3974651984 is 4891564793.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 759404 + ... + 764619.

Almost surely, 2^3974651984 is an apocalyptic number.

It is an amenable number.

3974651984 is a deficient number, since it is larger than the sum of its proper divisors (3773486032).

3974651984 is a wasteful number, since it uses less digits than its factorization.

3974651984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524194 (or 1524188 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The square root of 3974651984 is about 63044.8410577741. The cubic root of 3974651984 is about 1584.0408217382.

The spelling of 3974651984 in words is "three billion, nine hundred seventy-four million, six hundred fifty-one thousand, nine hundred eighty-four".