2256313949 has 2 divisors, whose sum is σ = 2256313950. Its totient is φ = 2256313948.

The previous prime is 2256313937. The next prime is 2256313957. The reversal of 2256313949 is 9493136522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1749748900 + 506565049 = 41830^2 + 22507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2256313949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2256313919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128156974 + 1128156975.

It is an arithmetic number, because the mean of its divisors is an integer number (1128156975).

Almost surely, 2^2256313949 is an apocalyptic number.

It is an amenable number.

2256313949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256313949 is an equidigital number, since it uses as much as digits as its factorization.

2256313949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 44.

The square root of 2256313949 is about 47500.6731425987. The cubic root of 2256313949 is about 1311.5952729057.

The spelling of 2256313949 in words is "two billion, two hundred fifty-six million, three hundred thirteen thousand, nine hundred forty-nine".