2256842839 has 2 divisors, whose sum is σ = 2256842840. Its totient is φ = 2256842838.

The previous prime is 2256842773. The next prime is 2256842897. The reversal of 2256842839 is 9382486522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2256842839 - 2¹¹ = 2256840791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2256842792 and 2256842801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2256842899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128421419 + 1128421420.

It is an arithmetic number, because the mean of its divisors is an integer number (1128421420).

Almost surely, 2^2256842839 is an apocalyptic number.

2256842839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256842839 is an equidigital number, since it uses as much as digits as its factorization.

2256842839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 49.

The square root of 2256842839 is about 47506.2400006568. The cubic root of 2256842839 is about 1311.6977461497.

The spelling of 2256842839 in words is "two billion, two hundred fifty-six million, eight hundred forty-two thousand, eight hundred thirty-nine".