2257791479 has 4 divisors (see below), whose sum is σ = 2257956720. Its totient is φ = 2257626240.

The previous prime is 2257791469. The next prime is 2257791493. The reversal of 2257791479 is 9741977522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9741977522 = 2 ⋅4870988761.

It is a cyclic number.

It is not a de Polignac number, because 2257791479 - 2²⁴ = 2241014263 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 2257791479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257791439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60074 + ... + 90135.

It is an arithmetic number, because the mean of its divisors is an integer number (564489180).

Almost surely, 2^2257791479 is an apocalyptic number.

2257791479 is a deficient number, since it is larger than the sum of its proper divisors (165241).

2257791479 is a wasteful number, since it uses less digits than its factorization.

2257791479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165240.

The product of its digits is 2222640, while the sum is 53.

The square root of 2257791479 is about 47516.2233242500. The cubic root of 2257791479 is about 1311.8815064929.

The spelling of 2257791479 in words is "two billion, two hundred fifty-seven million, seven hundred ninety-one thousand, four hundred seventy-nine".