2257908479 has 4 divisors (see below), whose sum is σ = 2281185984. Its totient is φ = 2234630976.

The previous prime is 2257908449. The next prime is 2257908487. The reversal of 2257908479 is 9748097522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2257908479 - 2⁸ = 2257908223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2257908479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257908439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11638607 + ... + 11638800.

It is an arithmetic number, because the mean of its divisors is an integer number (570296496).

Almost surely, 2^2257908479 is an apocalyptic number.

2257908479 is a deficient number, since it is larger than the sum of its proper divisors (23277505).

2257908479 is an equidigital number, since it uses as much as digits as its factorization.

2257908479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23277504.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 2257908479 is about 47517.4544667536. The cubic root of 2257908479 is about 1311.9041669093.

The spelling of 2257908479 in words is "two billion, two hundred fifty-seven million, nine hundred eight thousand, four hundred seventy-nine".