3161661564 has 48 divisors (see below), whose sum is σ = 7905316608. Its totient is φ = 979938048.

The previous prime is 3161661557. The next prime is 3161661589. The reversal of 3161661564 is 4651661613.

3161661564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3161661564² = 19992207690549852192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76432 + ... + 110295.

It is an arithmetic number, because the mean of its divisors is an integer number (164694096).

Almost surely, 2^3161661564 is an apocalyptic number.

3161661564 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3161661564 is an abundant number, since it is smaller than the sum of its proper divisors (4743655044).

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

3161661564 is a wasteful number, since it uses less digits than its factorization.

3161661564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186834 (or 186832 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 3161661564 is about 56228.6542965417. The cubic root of 3161661564 is about 1467.7039392611.

The spelling of 3161661564 in words is "three billion, one hundred sixty-one million, six hundred sixty-one thousand, five hundred sixty-four".