1564264385 has 16 divisors (see below), whose sum is σ = 1983536640. Its totient is φ = 1181843520.

The previous prime is 1564264369. The next prime is 1564264391. The reversal of 1564264385 is 5834624651.

It is not a de Polignac number, because 1564264385 - 2⁴ = 1564264369 is a prime.

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, 77006 + ... + 95175.

It is an arithmetic number, because the mean of its divisors is an integer number (123971040).

Almost surely, 2^1564264385 is an apocalyptic number.

It is an amenable number.

1564264385 is a deficient number, since it is larger than the sum of its proper divisors (419272255).

1564264385 is a wasteful number, since it uses less digits than its factorization.

1564264385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172288.

The product of its digits is 691200, while the sum is 44.

The square root of 1564264385 is about 39550.7823563580. The cubic root of 1564264385 is about 1160.8338200876.

The spelling of 1564264385 in words is "one billion, five hundred sixty-four million, two hundred sixty-four thousand, three hundred eighty-five".