18480324173 has 2 divisors, whose sum is σ = 18480324174. Its totient is φ = 18480324172.

The previous prime is 18480324139. The next prime is 18480324193. The reversal of 18480324173 is 37142308481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13943358724 + 4536965449 = 118082^2 + 67357^2 .

It is a cyclic number.

It is not a de Polignac number, because 18480324173 - 2²² = 18476129869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18480324173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18480324193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9240162086 + 9240162087.

It is an arithmetic number, because the mean of its divisors is an integer number (9240162087).

Almost surely, 2^18480324173 is an apocalyptic number.

It is an amenable number.

18480324173 is a deficient number, since it is larger than the sum of its proper divisors (1).

18480324173 is an equidigital number, since it uses as much as digits as its factorization.

18480324173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 18480324173 in words is "eighteen billion, four hundred eighty million, three hundred twenty-four thousand, one hundred seventy-three".