2268356857 has 24 divisors (see below), whose sum is σ = 2641290120. Its totient is φ = 1935118080.

The previous prime is 2268356851. The next prime is 2268356861. The reversal of 2268356857 is 7586538622.

It can be written as a sum of positive squares in 4 ways, for example, as 332004841 + 1936352016 = 18221^2 + 44004^2 .

It is not a de Polignac number, because 2268356857 - 2⁷ = 2268356729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2268356851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186519 + ... + 198307.

It is an arithmetic number, because the mean of its divisors is an integer number (110053755).

Almost surely, 2^2268356857 is an apocalyptic number.

It is an amenable number.

2268356857 is a deficient number, since it is larger than the sum of its proper divisors (372933263).

2268356857 is a wasteful number, since it uses less digits than its factorization.

2268356857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11881 (or 11862 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 52.

The square root of 2268356857 is about 47627.2700981276. The cubic root of 2268356857 is about 1313.9246476145.

The spelling of 2268356857 in words is "two billion, two hundred sixty-eight million, three hundred fifty-six thousand, eight hundred fifty-seven".