2258844778 has 4 divisors (see below), whose sum is σ = 3388267170. Its totient is φ = 1129422388.

The previous prime is 2258844737. The next prime is 2258844799. The reversal of 2258844778 is 8774488522.

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

It can be written as a sum of positive squares in only one way, i.e., 2085474889 + 173369889 = 45667^2 + 13167^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564711193 + ... + 564711196.

Almost surely, 2^2258844778 is an apocalyptic number.

2258844778 is a deficient number, since it is larger than the sum of its proper divisors (1129422392).

2258844778 is a wasteful number, since it uses less digits than its factorization.

2258844778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129422391.

The product of its digits is 8028160, while the sum is 55.

The square root of 2258844778 is about 47527.3056042524. The cubic root of 2258844778 is about 1312.0854799582.

The spelling of 2258844778 in words is "two billion, two hundred fifty-eight million, eight hundred forty-four thousand, seven hundred seventy-eight".