18332911213 has 2 divisors, whose sum is σ = 18332911214. Its totient is φ = 18332911212.

The previous prime is 18332911189. The next prime is 18332911217. The reversal of 18332911213 is 31211923381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13288786729 + 5044124484 = 115277^2 + 71022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18332911213 is a prime.

It is a super-2 number, since 2×18332911213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18332911217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9166455606 + 9166455607.

It is an arithmetic number, because the mean of its divisors is an integer number (9166455607).

Almost surely, 2^18332911213 is an apocalyptic number.

It is an amenable number.

18332911213 is a deficient number, since it is larger than the sum of its proper divisors (1).

18332911213 is an equidigital number, since it uses as much as digits as its factorization.

18332911213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The spelling of 18332911213 in words is "eighteen billion, three hundred thirty-two million, nine hundred eleven thousand, two hundred thirteen".