338518013 has 2 divisors, whose sum is σ = 338518014. Its totient is φ = 338518012.

The previous prime is 338518001. The next prime is 338518021. The reversal of 338518013 is 310815833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217474009 + 121044004 = 14747^2 + 11002^2 .

It is a cyclic number.

It is not a de Polignac number, because 338518013 - 2⁸ = 338517757 is a prime.

It is a super-2 number, since 2×338518013² = 229188890250936338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338518043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169259006 + 169259007.

It is an arithmetic number, because the mean of its divisors is an integer number (169259007).

Almost surely, 2^338518013 is an apocalyptic number.

It is an amenable number.

338518013 is a deficient number, since it is larger than the sum of its proper divisors (1).

338518013 is an equidigital number, since it uses as much as digits as its factorization.

338518013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 338518013 is about 18398.8590135367. The cubic root of 338518013 is about 696.9376516778.

The spelling of 338518013 in words is "three hundred thirty-eight million, five hundred eighteen thousand, thirteen".