2258306857 has 2 divisors, whose sum is σ = 2258306858. Its totient is φ = 2258306856.

The previous prime is 2258306849. The next prime is 2258306861. The reversal of 2258306857 is 7586038522.

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., 1197436816 + 1060870041 = 34604^2 + 32571^2 .

It is a cyclic number.

It is not a de Polignac number, because 2258306857 - 2³ = 2258306849 is a prime.

It is not a weakly prime, because it can be changed into another prime (2258306837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1129153428 + 1129153429.

It is an arithmetic number, because the mean of its divisors is an integer number (1129153429).

Almost surely, 2^2258306857 is an apocalyptic number.

It is an amenable number.

2258306857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2258306857 is an equidigital number, since it uses as much as digits as its factorization.

2258306857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 2258306857 is about 47521.6461941293. The cubic root of 2258306857 is about 1311.9813184013.

The spelling of 2258306857 in words is "two billion, two hundred fifty-eight million, three hundred six thousand, eight hundred fifty-seven".