3161660644 has 6 divisors (see below), whose sum is σ = 5532906134. Its totient is φ = 1580830320.

The previous prime is 3161660611. The next prime is 3161660669. The reversal of 3161660644 is 4460661613.

It can be written as a sum of positive squares in only one way, i.e., 2451438144 + 710222500 = 49512^2 + 26650^2 .

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 as a sum of consecutive naturals, namely, 395207577 + ... + 395207584.

Almost surely, 2^3161660644 is an apocalyptic number.

It is an amenable number.

3161660644 is a deficient number, since it is larger than the sum of its proper divisors (2371245490).

3161660644 is a wasteful number, since it uses less digits than its factorization.

3161660644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790415165 (or 790415163 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 3161660644 is about 56228.6461156589. The cubic root of 3161660644 is about 1467.7037969005.

The spelling of 3161660644 in words is "three billion, one hundred sixty-one million, six hundred sixty thousand, six hundred forty-four".