338345857 has 2 divisors, whose sum is σ = 338345858. Its totient is φ = 338345856.

The previous prime is 338345837. The next prime is 338345933. The reversal of 338345857 is 758543833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204804721 + 133541136 = 14311^2 + 11556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338345857 is a prime.

It is a super-2 number, since 2×338345857² = 228955837898128898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338345837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169172928 + 169172929.

It is an arithmetic number, because the mean of its divisors is an integer number (169172929).

Almost surely, 2^338345857 is an apocalyptic number.

It is an amenable number.

338345857 is a deficient number, since it is larger than the sum of its proper divisors (1).

338345857 is an equidigital number, since it uses as much as digits as its factorization.

338345857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 46.

The square root of 338345857 is about 18394.1799762860. The cubic root of 338345857 is about 696.8194872683.

The spelling of 338345857 in words is "three hundred thirty-eight million, three hundred forty-five thousand, eight hundred fifty-seven".