1564144464 has 40 divisors (see below), whose sum is σ = 4180044960. Its totient is φ = 503402368.

The previous prime is 1564144459. The next prime is 1564144529. The reversal of 1564144464 is 4644414651.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560442 + ... + 563225.

It is an arithmetic number, because the mean of its divisors is an integer number (104501124).

Almost surely, 2^1564144464 is an apocalyptic number.

It is an amenable number.

1564144464 is an abundant number, since it is smaller than the sum of its proper divisors (2615900496).

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

1564144464 is a wasteful number, since it uses less digits than its factorization.

1564144464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123707 (or 1123701 counting only the distinct ones).

The product of its digits is 184320, while the sum is 39.

The square root of 1564144464 is about 39549.2662890224. The cubic root of 1564144464 is about 1160.8041550447.

The spelling of 1564144464 in words is "one billion, five hundred sixty-four million, one hundred forty-four thousand, four hundred sixty-four".