1356646444 has 48 divisors (see below), whose sum is σ = 2636153856. Its totient is φ = 607622400.

The previous prime is 1356646433. The next prime is 1356646457. The reversal of 1356646444 is 4446466531.

It is a self number, because there is not a number n which added to its sum of digits gives 1356646444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327949 + ... + 332059.

It is an arithmetic number, because the mean of its divisors is an integer number (54919872).

Almost surely, 2^1356646444 is an apocalyptic number.

It is an amenable number.

1356646444 is a deficient number, since it is larger than the sum of its proper divisors (1279507412).

1356646444 is a wasteful number, since it uses less digits than its factorization.

1356646444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366 (or 4364 counting only the distinct ones).

The product of its digits is 829440, while the sum is 43.

The square root of 1356646444 is about 36832.6817378263. The cubic root of 1356646444 is about 1107.0202373823.

The spelling of 1356646444 in words is "one billion, three hundred fifty-six million, six hundred forty-six thousand, four hundred forty-four".