1564163265 has 64 divisors (see below), whose sum is σ = 2926632960. Its totient is φ = 698630400.

The previous prime is 1564163233. The next prime is 1564163267. The reversal of 1564163265 is 5623614651.

It is not a de Polignac number, because 1564163265 - 2⁵ = 1564163233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1564163267) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 836862 + ... + 838728.

It is an arithmetic number, because the mean of its divisors is an integer number (45728640).

Almost surely, 2^1564163265 is an apocalyptic number.

1564163265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1564163265 is a deficient number, since it is larger than the sum of its proper divisors (1362469695).

1564163265 is a wasteful number, since it uses less digits than its factorization.

1564163265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062.

The product of its digits is 129600, while the sum is 39.

The square root of 1564163265 is about 39549.5039791904. The cubic root of 1564163265 is about 1160.8088059773.

The spelling of 1564163265 in words is "one billion, five hundred sixty-four million, one hundred sixty-three thousand, two hundred sixty-five".