3995251264 has 21 divisors (see below), whose sum is σ = 7929080281. Its totient is φ = 1997372800.

The previous prime is 3995251261. The next prime is 3995251291. The reversal of 3995251264 is 4621525993.

The square root of 3995251264 is 63208.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2744921664 + 1250329600 = 52392^2 + 35360^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3995251261) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 501714 + ... + 509614.

Almost surely, 2^3995251264 is an apocalyptic number.

3995251264 is the 63208-th square number.

It is an amenable number.

3995251264 is a deficient number, since it is larger than the sum of its proper divisors (3933829017).

3995251264 is an frugal number, since it uses more digits than its factorization.

3995251264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15814 (or 7903 counting only the distinct ones).

The product of its digits is 583200, while the sum is 46.

The cubic root of 3995251264 is about 1586.7726241726.

The spelling of 3995251264 in words is "three billion, nine hundred ninety-five million, two hundred fifty-one thousand, two hundred sixty-four".