3161649808618 has 80 divisors (see below), whose sum is σ = 5585883830280. Its totient is φ = 1341995655168.

The previous prime is 3161649808609. The next prime is 3161649808631. The reversal of 3161649808618 is 8168089461613.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3161508031969 + 141776649 = 1778063^2 + 11907^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 212226546 + ... + 212241442.

Almost surely, 2^{3161649808618} is an apocalyptic number.

3161649808618 is a deficient number, since it is larger than the sum of its proper divisors (2424234021662).

3161649808618 is a wasteful number, since it uses less digits than its factorization.

3161649808618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15349 (or 15328 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 3161649808618 in words is "three trillion, one hundred sixty-one billion, six hundred forty-nine million, eight hundred eight thousand, six hundred eighteen".