3944951568 has 30 divisors (see below), whose sum is σ = 11040385694. Its totient is φ = 1314983808.

The previous prime is 3944951561. The next prime is 3944951587. The reversal of 3944951568 is 8651594493.

3944951568 is a `hidden beast` number, since 3 + 94 + 495 + 1 + 5 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2575359504 + 1369592064 = 50748^2 + 37008^2 .

It is not an unprimeable number, because it can be changed into a prime (3944951561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13697605 + ... + 13697892.

Almost surely, 2^3944951568 is an apocalyptic number.

It is an amenable number.

3944951568 is an abundant number, since it is smaller than the sum of its proper divisors (7095434126).

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

3944951568 is a wasteful number, since it uses less digits than its factorization.

3944951568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27395511 (or 27395502 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 3944951568 is about 62808.8494401864. The cubic root of 3944951568 is about 1580.0853940921.

The spelling of 3944951568 in words is "three billion, nine hundred forty-four million, nine hundred fifty-one thousand, five hundred sixty-eight".