2256348649 has 2 divisors, whose sum is σ = 2256348650. Its totient is φ = 2256348648.

The previous prime is 2256348637. The next prime is 2256348659. The reversal of 2256348649 is 9468436522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1262523024 + 993825625 = 35532^2 + 31525^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256348649 - 2⁵ = 2256348617 is a prime.

It is a super-2 number, since 2×2256348649² = 10182218451688250402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2256348659) 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 as a sum of consecutive naturals, namely, 1128174324 + 1128174325.

It is an arithmetic number, because the mean of its divisors is an integer number (1128174325).

Almost surely, 2^2256348649 is an apocalyptic number.

It is an amenable number.

2256348649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256348649 is an equidigital number, since it uses as much as digits as its factorization.

2256348649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 49.

The square root of 2256348649 is about 47501.0383991761. The cubic root of 2256348649 is about 1311.6019965744.

The spelling of 2256348649 in words is "two billion, two hundred fifty-six million, three hundred forty-eight thousand, six hundred forty-nine".