338148457 has 2 divisors, whose sum is σ = 338148458. Its totient is φ = 338148456.

The previous prime is 338148449. The next prime is 338148487. The reversal of 338148457 is 754841833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337861161 + 287296 = 18381^2 + 536^2 .

It is a cyclic number.

It is not a de Polignac number, because 338148457 - 2³ = 338148449 is a prime.

It is a super-2 number, since 2×338148457² = 228688757942961698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338148407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169074228 + 169074229.

It is an arithmetic number, because the mean of its divisors is an integer number (169074229).

Almost surely, 2^338148457 is an apocalyptic number.

It is an amenable number.

338148457 is a deficient number, since it is larger than the sum of its proper divisors (1).

338148457 is an equidigital number, since it uses as much as digits as its factorization.

338148457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 43.

The square root of 338148457 is about 18388.8133657395. The cubic root of 338148457 is about 696.6839465455.

The spelling of 338148457 in words is "three hundred thirty-eight million, one hundred forty-eight thousand, four hundred fifty-seven".