18264092909 has 2 divisors, whose sum is σ = 18264092910. Its totient is φ = 18264092908.

The previous prime is 18264092881. The next prime is 18264092929. The reversal of 18264092909 is 90929046281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14301768100 + 3962324809 = 119590^2 + 62947^2 .

It is a cyclic number.

It is not a de Polignac number, because 18264092909 - 2⁸ = 18264092653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18264092929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9132046454 + 9132046455.

It is an arithmetic number, because the mean of its divisors is an integer number (9132046455).

Almost surely, 2^18264092909 is an apocalyptic number.

It is an amenable number.

18264092909 is a deficient number, since it is larger than the sum of its proper divisors (1).

18264092909 is an equidigital number, since it uses as much as digits as its factorization.

18264092909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 18264092909 in words is "eighteen billion, two hundred sixty-four million, ninety-two thousand, nine hundred nine".