7256949313 has 2 divisors, whose sum is σ = 7256949314. Its totient is φ = 7256949312.

The previous prime is 7256949277. The next prime is 7256949331. The reversal of 7256949313 is 3139496527.

Together with next prime (7256949331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7027971889 + 228977424 = 83833^2 + 15132^2 .

It is a cyclic number.

It is not a de Polignac number, because 7256949313 - 2²⁹ = 6720078401 is a prime.

It is not a weakly prime, because it can be changed into another prime (7256949013) 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 as a sum of consecutive naturals, namely, 3628474656 + 3628474657.

It is an arithmetic number, because the mean of its divisors is an integer number (3628474657).

Almost surely, 2^7256949313 is an apocalyptic number.

It is an amenable number.

7256949313 is a deficient number, since it is larger than the sum of its proper divisors (1).

7256949313 is an equidigital number, since it uses as much as digits as its factorization.

7256949313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 49.

The square root of 7256949313 is about 85187.7298265425. The cubic root of 7256949313 is about 1936.0565121110.

The spelling of 7256949313 in words is "seven billion, two hundred fifty-six million, nine hundred forty-nine thousand, three hundred thirteen".