18264000565 has 8 divisors (see below), whose sum is σ = 22063894200. Its totient is φ = 14513138112.

The previous prime is 18264000551. The next prime is 18264000583. The reversal of 18264000565 is 56500046281.

18264000565 = 95561² + 95562².

It can be written as a sum of positive squares in 4 ways, for example, as 774731556 + 17489269009 = 27834^2 + 132247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18264000565 - 2⁵ = 18264000533 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12256974 + ... + 12258463.

It is an arithmetic number, because the mean of its divisors is an integer number (2757986775).

Almost surely, 2^18264000565 is an apocalyptic number.

18264000565 is the 95562-nd centered square number.

It is an amenable number.

18264000565 is a deficient number, since it is larger than the sum of its proper divisors (3799893635).

18264000565 is a wasteful number, since it uses less digits than its factorization.

18264000565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24515591.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 18264000565 in words is "eighteen billion, two hundred sixty-four million, five hundred sixty-five", and thus it is an aban number.