1564819252 has 48 divisors (see below), whose sum is σ = 2929651200. Its totient is φ = 729203040.

The previous prime is 1564819231. The next prime is 1564819297. The reversal of 1564819252 is 2529184651.

It is a junction number, because it is equal to n+sod(n) for n = 1564819199 and 1564819208.

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 15 ways as a sum of consecutive naturals, for example, 2264227 + ... + 2264917.

It is an arithmetic number, because the mean of its divisors is an integer number (61034400).

Almost surely, 2^1564819252 is an apocalyptic number.

It is an amenable number.

1564819252 is a deficient number, since it is larger than the sum of its proper divisors (1364831948).

1564819252 is a wasteful number, since it uses less digits than its factorization.

1564819252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1154 counting only the distinct ones).

The product of its digits is 172800, while the sum is 43.

The square root of 1564819252 is about 39557.7963491396. The cubic root of 1564819252 is about 1160.9710586606.

The spelling of 1564819252 in words is "one billion, five hundred sixty-four million, eight hundred nineteen thousand, two hundred fifty-two".