18330288673 has 2 divisors, whose sum is σ = 18330288674. Its totient is φ = 18330288672.

The previous prime is 18330288671. The next prime is 18330288731. The reversal of 18330288673 is 37688203381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15707107584 + 2623181089 = 125328^2 + 51217^2 .

It is a cyclic number.

It is not a de Polignac number, because 18330288673 - 2¹ = 18330288671 is a prime.

Together with 18330288671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18330288671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9165144336 + 9165144337.

It is an arithmetic number, because the mean of its divisors is an integer number (9165144337).

Almost surely, 2^18330288673 is an apocalyptic number.

It is an amenable number.

18330288673 is a deficient number, since it is larger than the sum of its proper divisors (1).

18330288673 is an equidigital number, since it uses as much as digits as its factorization.

18330288673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 18330288673 in words is "eighteen billion, three hundred thirty million, two hundred eighty-eight thousand, six hundred seventy-three".