18512259323 has 2 divisors, whose sum is σ = 18512259324. Its totient is φ = 18512259322.

The previous prime is 18512259307. The next prime is 18512259349. The reversal of 18512259323 is 32395221581.

It is a weak prime.

It is an emirp because it is prime and its reverse (32395221581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18512259323 - 2⁴ = 18512259307 is a prime.

It is not a weakly prime, because it can be changed into another prime (18512259383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9256129661 + 9256129662.

It is an arithmetic number, because the mean of its divisors is an integer number (9256129662).

Almost surely, 2^18512259323 is an apocalyptic number.

18512259323 is a deficient number, since it is larger than the sum of its proper divisors (1).

18512259323 is an equidigital number, since it uses as much as digits as its factorization.

18512259323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 41.

The spelling of 18512259323 in words is "eighteen billion, five hundred twelve million, two hundred fifty-nine thousand, three hundred twenty-three".