3961508564 has 12 divisors (see below), whose sum is σ = 7465920084. Its totient is φ = 1828388544.

The previous prime is 3961508561. The next prime is 3961508609. The reversal of 3961508564 is 4658051693.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 488763664 + 3472744900 = 22108^2 + 58930^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3961508561) 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, 38091377 + ... + 38091480.

It is an arithmetic number, because the mean of its divisors is an integer number (622160007).

Almost surely, 2^3961508564 is an apocalyptic number.

It is an amenable number.

3961508564 is a deficient number, since it is larger than the sum of its proper divisors (3504411520).

3961508564 is a wasteful number, since it uses less digits than its factorization.

3961508564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76182874 (or 76182872 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 3961508564 is about 62940.5160766894. The cubic root of 3961508564 is about 1582.2928527669.

The spelling of 3961508564 in words is "three billion, nine hundred sixty-one million, five hundred eight thousand, five hundred sixty-four".