18264023009 has 8 divisors (see below), whose sum is σ = 18465546120. Its totient is φ = 18062770176.

The previous prime is 18264022999. The next prime is 18264023021. The reversal of 18264023009 is 90032046281.

It can be written as a sum of positive squares in 4 ways, for example, as 1203409 + 18262819600 = 1097^2 + 135140^2 .

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 18264023009 - 2⁸ = 18264022753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18264023009.

It is not an unprimeable number, because it can be changed into a prime (18264023909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69857 + ... + 203489.

It is an arithmetic number, because the mean of its divisors is an integer number (2308193265).

Almost surely, 2^18264023009 is an apocalyptic number.

It is an amenable number.

18264023009 is a deficient number, since it is larger than the sum of its proper divisors (201523111).

18264023009 is a wasteful number, since it uses less digits than its factorization.

18264023009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135139.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 18264023009 in words is "eighteen billion, two hundred sixty-four million, twenty-three thousand, nine".