3161660656 has 160 divisors (see below), whose sum is σ = 8031057408. Its totient is φ = 1169925120.

The previous prime is 3161660611. The next prime is 3161660669. The reversal of 3161660656 is 6560661613.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1959306 + ... + 1960918.

Almost surely, 2^3161660656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3161660656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4015528704).

3161660656 is an abundant number, since it is smaller than the sum of its proper divisors (4869396752).

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

3161660656 is a wasteful number, since it uses less digits than its factorization.

3161660656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719 (or 1713 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 3161660656 is about 56228.6462223661. The cubic root of 3161660656 is about 1467.7037987574.

The spelling of 3161660656 in words is "three billion, one hundred sixty-one million, six hundred sixty thousand, six hundred fifty-six".