6818960957 has 2 divisors, whose sum is σ = 6818960958. Its totient is φ = 6818960956.

The previous prime is 6818960927. The next prime is 6818960959. The reversal of 6818960957 is 7590698186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5220640516 + 1598320441 = 72254^2 + 39979^2 .

It is a cyclic number.

It is not a de Polignac number, because 6818960957 - 2²⁴ = 6802183741 is a prime.

Together with 6818960959, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6818960896 and 6818960905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6818960959) 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, 3409480478 + 3409480479.

It is an arithmetic number, because the mean of its divisors is an integer number (3409480479).

Almost surely, 2^6818960957 is an apocalyptic number.

It is an amenable number.

6818960957 is a deficient number, since it is larger than the sum of its proper divisors (1).

6818960957 is an equidigital number, since it uses as much as digits as its factorization.

6818960957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 59.

The square root of 6818960957 is about 82577.0001695387. Note that the first 3 decimals coincide. The cubic root of 6818960957 is about 1896.2957335889.

The spelling of 6818960957 in words is "six billion, eight hundred eighteen million, nine hundred sixty thousand, nine hundred fifty-seven".