338646257 has 2 divisors, whose sum is σ = 338646258. Its totient is φ = 338646256.

The previous prime is 338646251. The next prime is 338646271. The reversal of 338646257 is 752646833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324576256 + 14070001 = 18016^2 + 3751^2 .

It is a cyclic number.

It is not a de Polignac number, because 338646257 - 2⁴ = 338646241 is a prime.

It is a super-2 number, since 2×338646257² = 229362574760220098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338646251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169323128 + 169323129.

It is an arithmetic number, because the mean of its divisors is an integer number (169323129).

Almost surely, 2^338646257 is an apocalyptic number.

It is an amenable number.

338646257 is a deficient number, since it is larger than the sum of its proper divisors (1).

338646257 is an equidigital number, since it uses as much as digits as its factorization.

338646257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 44.

The square root of 338646257 is about 18402.3437909414. The cubic root of 338646257 is about 697.0256497405.

The spelling of 338646257 in words is "three hundred thirty-eight million, six hundred forty-six thousand, two hundred fifty-seven".