18339914213 has 2 divisors, whose sum is σ = 18339914214. Its totient is φ = 18339914212.

The previous prime is 18339914161. The next prime is 18339914239. The reversal of 18339914213 is 31241993381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15479589889 + 2860324324 = 124417^2 + 53482^2 .

It is an emirp because it is prime and its reverse (31241993381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18339914213 - 2¹² = 18339910117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18339914113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9169957106 + 9169957107.

It is an arithmetic number, because the mean of its divisors is an integer number (9169957107).

Almost surely, 2^18339914213 is an apocalyptic number.

It is an amenable number.

18339914213 is a deficient number, since it is larger than the sum of its proper divisors (1).

18339914213 is an equidigital number, since it uses as much as digits as its factorization.

18339914213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The spelling of 18339914213 in words is "eighteen billion, three hundred thirty-nine million, nine hundred fourteen thousand, two hundred thirteen".