18713339 has 2 divisors, whose sum is σ = 18713340. Its totient is φ = 18713338.

The previous prime is 18713333. The next prime is 18713341. The reversal of 18713339 is 93331781.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18713339 is a prime.

It is a Sophie Germain prime.

Together with 18713341, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18713299 and 18713308.

It is not a weakly prime, because it can be changed into another prime (18713333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9356669 + 9356670.

It is an arithmetic number, because the mean of its divisors is an integer number (9356670).

Almost surely, 2^18713339 is an apocalyptic number.

18713339 is a deficient number, since it is larger than the sum of its proper divisors (1).

18713339 is an equidigital number, since it uses as much as digits as its factorization.

18713339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 18713339 is about 4325.8916999851. The cubic root of 18713339 is about 265.4913820982.

The spelling of 18713339 in words is "eighteen million, seven hundred thirteen thousand, three hundred thirty-nine".