1920568064 has 36 divisors (see below), whose sum is σ = 4059150984. Its totient is φ = 903794688.

The previous prime is 1920568063. The next prime is 1920568073. The reversal of 1920568064 is 4608650291.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1920568063) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 216302 + ... + 225005.

It is an arithmetic number, because the mean of its divisors is an integer number (112754194).

Almost surely, 2^1920568064 is an apocalyptic number.

It is an amenable number.

1920568064 is an abundant number, since it is smaller than the sum of its proper divisors (2138582920).

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

1920568064 is an equidigital number, since it uses as much as digits as its factorization.

1920568064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441340 (or 441326 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1920568064 is about 43824.2862349177. The cubic root of 1920568064 is about 1243.0155671646.

The spelling of 1920568064 in words is "one billion, nine hundred twenty million, five hundred sixty-eight thousand, sixty-four".