2256864361 has 4 divisors (see below), whose sum is σ = 2334687300. Its totient is φ = 2179041424.

The previous prime is 2256864349. The next prime is 2256864413. The reversal of 2256864361 is 1634686522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 694638736 + 1562225625 = 26356^2 + 39525^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256864361 - 2²³ = 2248475753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256864301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38911426 + ... + 38911483.

It is an arithmetic number, because the mean of its divisors is an integer number (583671825).

Almost surely, 2^2256864361 is an apocalyptic number.

It is an amenable number.

2256864361 is a deficient number, since it is larger than the sum of its proper divisors (77822939).

2256864361 is an equidigital number, since it uses as much as digits as its factorization.

2256864361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77822938.

The product of its digits is 414720, while the sum is 43.

The square root of 2256864361 is about 47506.4665177279. The cubic root of 2256864361 is about 1311.7019157310.

The spelling of 2256864361 in words is "two billion, two hundred fifty-six million, eight hundred sixty-four thousand, three hundred sixty-one".