18322081223 has 2 divisors, whose sum is σ = 18322081224. Its totient is φ = 18322081222.

The previous prime is 18322081201. The next prime is 18322081231. The reversal of 18322081223 is 32218022381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18322081223 - 2⁸ = 18322080967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18322081223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18322081123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9161040611 + 9161040612.

It is an arithmetic number, because the mean of its divisors is an integer number (9161040612).

Almost surely, 2^18322081223 is an apocalyptic number.

18322081223 is a deficient number, since it is larger than the sum of its proper divisors (1).

18322081223 is an equidigital number, since it uses as much as digits as its factorization.

18322081223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 18322081223 in words is "eighteen billion, three hundred twenty-two million, eighty-one thousand, two hundred twenty-three".