7628391313 has 2 divisors, whose sum is σ = 7628391314. Its totient is φ = 7628391312.

The previous prime is 7628391311. The next prime is 7628391319. The reversal of 7628391313 is 3131938267.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6529932864 + 1098458449 = 80808^2 + 33143^2 .

It is a cyclic number.

It is not a de Polignac number, because 7628391313 - 2¹ = 7628391311 is a prime.

Together with 7628391311, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7628391313.

It is not a weakly prime, because it can be changed into another prime (7628391311) 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, 3814195656 + 3814195657.

It is an arithmetic number, because the mean of its divisors is an integer number (3814195657).

Almost surely, 2^7628391313 is an apocalyptic number.

It is an amenable number.

7628391313 is a deficient number, since it is larger than the sum of its proper divisors (1).

7628391313 is an equidigital number, since it uses as much as digits as its factorization.

7628391313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 7628391313 is about 87340.6624259285. The cubic root of 7628391313 is about 1968.5403492644.

The spelling of 7628391313 in words is "seven billion, six hundred twenty-eight million, three hundred ninety-one thousand, three hundred thirteen".