3971633576 has 16 divisors (see below), whose sum is σ = 7648078740. Its totient is φ = 1932145920.

The previous prime is 3971633573. The next prime is 3971633609. The reversal of 3971633576 is 6753361793.

3971633576 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3189312676 + 782320900 = 56474^2 + 27970^2 .

It is not an unprimeable number, because it can be changed into a prime (3971633573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6708545 + ... + 6709136.

Almost surely, 2^3971633576 is an apocalyptic number.

It is an amenable number.

3971633576 is a deficient number, since it is larger than the sum of its proper divisors (3676445164).

3971633576 is a wasteful number, since it uses less digits than its factorization.

3971633576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13417724 (or 13417720 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 50.

The square root of 3971633576 is about 63020.8979307658. The cubic root of 3971633576 is about 1583.6397390485.

The spelling of 3971633576 in words is "three billion, nine hundred seventy-one million, six hundred thirty-three thousand, five hundred seventy-six".