1956445568 has 64 divisors (see below), whose sum is σ = 4859377920. Its totient is φ = 762247680.

The previous prime is 1956445553. The next prime is 1956445571. The reversal of 1956445568 is 8655446591.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89396 + ... + 109107.

It is an arithmetic number, because the mean of its divisors is an integer number (75927780).

Almost surely, 2^1956445568 is an apocalyptic number.

It is an amenable number.

1956445568 is an abundant number, since it is smaller than the sum of its proper divisors (2902932352).

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

1956445568 is a wasteful number, since it uses less digits than its factorization.

1956445568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198535 (or 198523 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 53.

The square root of 1956445568 is about 44231.7258085189. The cubic root of 1956445568 is about 1250.7079867681.

The spelling of 1956445568 in words is "one billion, nine hundred fifty-six million, four hundred forty-five thousand, five hundred sixty-eight".