2656195644 has 12 divisors (see below), whose sum is σ = 6197789864. Its totient is φ = 885398544.

The previous prime is 2656195639. The next prime is 2656195669. The reversal of 2656195644 is 4465916562.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2656195593 and 2656195602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110674807 + ... + 110674830.

Almost surely, 2^2656195644 is an apocalyptic number.

It is an amenable number.

2656195644 is an abundant number, since it is smaller than the sum of its proper divisors (3541594220).

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

2656195644 is a wasteful number, since it uses less digits than its factorization.

2656195644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221349644 (or 221349642 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 48.

The square root of 2656195644 is about 51538.2929868656. The cubic root of 2656195644 is about 1384.9051174210.

The spelling of 2656195644 in words is "two billion, six hundred fifty-six million, one hundred ninety-five thousand, six hundred forty-four".