338768291 has 2 divisors, whose sum is σ = 338768292. Its totient is φ = 338768290.

The previous prime is 338768207. The next prime is 338768293. The reversal of 338768291 is 192867833.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338768291 is a prime.

It is a super-2 number, since 2×338768291² = 229527909974121362, which contains 22 as substring.

Together with 338768293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (338768293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169384145 + 169384146.

It is an arithmetic number, because the mean of its divisors is an integer number (169384146).

Almost surely, 2^338768291 is an apocalyptic number.

338768291 is a deficient number, since it is larger than the sum of its proper divisors (1).

338768291 is an equidigital number, since it uses as much as digits as its factorization.

338768291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 338768291 is about 18405.6592112317. The cubic root of 338768291 is about 697.1093660186.

The spelling of 338768291 in words is "three hundred thirty-eight million, seven hundred sixty-eight thousand, two hundred ninety-one".