1656256444 has 12 divisors (see below), whose sum is σ = 2899726704. Its totient is φ = 827763104.

The previous prime is 1656256423. The next prime is 1656256477. The reversal of 1656256444 is 4446526561.

It is a self number, because there is not a number n which added to its sum of digits gives 1656256444.

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, 80944 + ... + 99319.

It is an arithmetic number, because the mean of its divisors is an integer number (241643892).

Almost surely, 2^1656256444 is an apocalyptic number.

It is an amenable number.

1656256444 is a deficient number, since it is larger than the sum of its proper divisors (1243470260).

1656256444 is a wasteful number, since it uses less digits than its factorization.

1656256444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182564 (or 182562 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The square root of 1656256444 is about 40697.1306605269. The cubic root of 1656256444 is about 1183.1574072304.

The spelling of 1656256444 in words is "one billion, six hundred fifty-six million, two hundred fifty-six thousand, four hundred forty-four".