18456590153 has 2 divisors, whose sum is σ = 18456590154. Its totient is φ = 18456590152.

The previous prime is 18456590149. The next prime is 18456590167. The reversal of 18456590153 is 35109565481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14111539264 + 4345050889 = 118792^2 + 65917^2 .

It is a cyclic number.

It is not a de Polignac number, because 18456590153 - 2² = 18456590149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18456590098 and 18456590107.

It is not a weakly prime, because it can be changed into another prime (18456590123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9228295076 + 9228295077.

It is an arithmetic number, because the mean of its divisors is an integer number (9228295077).

Almost surely, 2^18456590153 is an apocalyptic number.

It is an amenable number.

18456590153 is a deficient number, since it is larger than the sum of its proper divisors (1).

18456590153 is an equidigital number, since it uses as much as digits as its factorization.

18456590153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 18456590153 in words is "eighteen billion, four hundred fifty-six million, five hundred ninety thousand, one hundred fifty-three".