3164512721 has 16 divisors (see below), whose sum is σ = 3230392320. Its totient is φ = 3099559680.

The previous prime is 3164512699. The next prime is 3164512751. The reversal of 3164512721 is 1272154613.

It is a cyclic number.

It is not a de Polignac number, because 3164512721 - 2²⁶ = 3097403857 is a prime.

It is a super-2 number, since 2×3164512721² = 20028281522741647682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3164512751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4157981 + ... + 4158741.

It is an arithmetic number, because the mean of its divisors is an integer number (201899520).

Almost surely, 2^3164512721 is an apocalyptic number.

It is an amenable number.

3164512721 is a deficient number, since it is larger than the sum of its proper divisors (65879599).

3164512721 is a wasteful number, since it uses less digits than its factorization.

3164512721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264.

The product of its digits is 10080, while the sum is 32.

The square root of 3164512721 is about 56254.0018220926. The cubic root of 3164512721 is about 1468.1449939630.

The spelling of 3164512721 in words is "three billion, one hundred sixty-four million, five hundred twelve thousand, seven hundred twenty-one".