2259918478 has 4 divisors (see below), whose sum is σ = 3389877720. Its totient is φ = 1129959238.

The previous prime is 2259918433. The next prime is 2259918487. The reversal of 2259918478 is 8748199522.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 564979618 + ... + 564979621.

It is an arithmetic number, because the mean of its divisors is an integer number (847469430).

Almost surely, 2^2259918478 is an apocalyptic number.

2259918478 is a deficient number, since it is larger than the sum of its proper divisors (1129959242).

2259918478 is a wasteful number, since it uses less digits than its factorization.

2259918478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129959241.

The product of its digits is 2903040, while the sum is 55.

The square root of 2259918478 is about 47538.5998742075. The cubic root of 2259918478 is about 1312.2933388660.

The spelling of 2259918478 in words is "two billion, two hundred fifty-nine million, nine hundred eighteen thousand, four hundred seventy-eight".