338944513 has 2 divisors, whose sum is σ = 338944514. Its totient is φ = 338944512.

The previous prime is 338944493. The next prime is 338944519. The reversal of 338944513 is 315449833.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271326784 + 67617729 = 16472^2 + 8223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338944513 is a prime.

It is a super-2 number, since 2×338944513² = 229766765785614338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338944519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169472256 + 169472257.

It is an arithmetic number, because the mean of its divisors is an integer number (169472257).

Almost surely, 2^338944513 is an apocalyptic number.

It is an amenable number.

338944513 is a deficient number, since it is larger than the sum of its proper divisors (1).

338944513 is an equidigital number, since it uses as much as digits as its factorization.

338944513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 338944513 is about 18410.4457577757. The cubic root of 338944513 is about 697.2302202182.

The spelling of 338944513 in words is "three hundred thirty-eight million, nine hundred forty-four thousand, five hundred thirteen".