2257908449 has 2 divisors, whose sum is σ = 2257908450. Its totient is φ = 2257908448.

The previous prime is 2257908439. The next prime is 2257908487. The reversal of 2257908449 is 9448097522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2140727824 + 117180625 = 46268^2 + 10825^2 .

It is a cyclic number.

It is not a de Polignac number, because 2257908449 - 2²⁰ = 2256859873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2257908397 and 2257908406.

It is not a weakly prime, because it can be changed into another prime (2257908439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128954224 + 1128954225.

It is an arithmetic number, because the mean of its divisors is an integer number (1128954225).

Almost surely, 2^2257908449 is an apocalyptic number.

It is an amenable number.

2257908449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2257908449 is an equidigital number, since it uses as much as digits as its factorization.

2257908449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 2257908449 is about 47517.4541510801. The cubic root of 2257908449 is about 1311.9041610990.

The spelling of 2257908449 in words is "two billion, two hundred fifty-seven million, nine hundred eight thousand, four hundred forty-nine".