18264053809 has 2 divisors, whose sum is σ = 18264053810. Its totient is φ = 18264053808.

The previous prime is 18264053789. The next prime is 18264053827. The reversal of 18264053809 is 90835046281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17381785600 + 882268209 = 131840^2 + 29703^2 .

It is a cyclic number.

It is not a de Polignac number, because 18264053809 - 2⁵ = 18264053777 is a prime.

It is not a weakly prime, because it can be changed into another prime (18264053909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9132026904 + 9132026905.

It is an arithmetic number, because the mean of its divisors is an integer number (9132026905).

Almost surely, 2^18264053809 is an apocalyptic number.

It is an amenable number.

18264053809 is a deficient number, since it is larger than the sum of its proper divisors (1).

18264053809 is an equidigital number, since it uses as much as digits as its factorization.

18264053809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 18264053809 in words is "eighteen billion, two hundred sixty-four million, fifty-three thousand, eight hundred nine".