1920656064 has 28 divisors (see below), whose sum is σ = 5081736344. Its totient is φ = 640218624.

The previous prime is 1920656063. The next prime is 1920656077. The reversal of 1920656064 is 4606560291.

It is not an unprimeable number, because it can be changed into a prime (1920656063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5001517 + ... + 5001900.

Almost surely, 2^1920656064 is an apocalyptic number.

It is an amenable number.

1920656064 is an abundant number, since it is smaller than the sum of its proper divisors (3161080280).

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

1920656064 is a wasteful number, since it uses less digits than its factorization.

1920656064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10003432 (or 10003422 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 1920656064 is about 43825.2902329237. The cubic root of 1920656064 is about 1243.0345517733.

The spelling of 1920656064 in words is "one billion, nine hundred twenty million, six hundred fifty-six thousand, sixty-four".