18450012253 has 2 divisors, whose sum is σ = 18450012254. Its totient is φ = 18450012252.

The previous prime is 18450012221. The next prime is 18450012283. The reversal of 18450012253 is 35221005481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17939387844 + 510624409 = 133938^2 + 22597^2 .

It is a cyclic number.

It is not a de Polignac number, because 18450012253 - 2⁵ = 18450012221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18450012283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9225006126 + 9225006127.

It is an arithmetic number, because the mean of its divisors is an integer number (9225006127).

Almost surely, 2^18450012253 is an apocalyptic number.

It is an amenable number.

18450012253 is a deficient number, since it is larger than the sum of its proper divisors (1).

18450012253 is an equidigital number, since it uses as much as digits as its factorization.

18450012253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 18450012253 in words is "eighteen billion, four hundred fifty million, twelve thousand, two hundred fifty-three".