18330330013 has 2 divisors, whose sum is σ = 18330330014. Its totient is φ = 18330330012.

The previous prime is 18330329939. The next prime is 18330330017. The reversal of 18330330013 is 31003303381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13778533924 + 4551796089 = 117382^2 + 67467^2 .

It is a cyclic number.

It is not a de Polignac number, because 18330330013 - 2¹⁷ = 18330198941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18330330013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18330330017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9165165006 + 9165165007.

It is an arithmetic number, because the mean of its divisors is an integer number (9165165007).

Almost surely, 2^18330330013 is an apocalyptic number.

It is an amenable number.

18330330013 is a deficient number, since it is larger than the sum of its proper divisors (1).

18330330013 is an equidigital number, since it uses as much as digits as its factorization.

18330330013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 18330330013 its reverse (31003303381), we get a palindrome (49333633394).

The spelling of 18330330013 in words is "eighteen billion, three hundred thirty million, three hundred thirty thousand, thirteen".