18324116329 has 2 divisors, whose sum is σ = 18324116330. Its totient is φ = 18324116328.

The previous prime is 18324116323. The next prime is 18324116339. The reversal of 18324116329 is 92361142381.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14179331929 + 4144784400 = 119077^2 + 64380^2 .

It is a cyclic number.

It is not a de Polignac number, because 18324116329 - 2⁵ = 18324116297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18324116291 and 18324116300.

It is not a weakly prime, because it can be changed into another prime (18324116323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9162058164 + 9162058165.

It is an arithmetic number, because the mean of its divisors is an integer number (9162058165).

Almost surely, 2^18324116329 is an apocalyptic number.

It is an amenable number.

18324116329 is a deficient number, since it is larger than the sum of its proper divisors (1).

18324116329 is an equidigital number, since it uses as much as digits as its factorization.

18324116329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The spelling of 18324116329 in words is "eighteen billion, three hundred twenty-four million, one hundred sixteen thousand, three hundred twenty-nine".