6944418857 has 2 divisors, whose sum is σ = 6944418858. Its totient is φ = 6944418856.

The previous prime is 6944418853. The next prime is 6944418917. The reversal of 6944418857 is 7588144496.

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., 6037445401 + 906973456 = 77701^2 + 30116^2 .

It is a cyclic number.

It is not a de Polignac number, because 6944418857 - 2² = 6944418853 is a prime.

It is a super-2 number, since 2×6944418857² = 96449906522914372898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6944418853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472209428 + 3472209429.

It is an arithmetic number, because the mean of its divisors is an integer number (3472209429).

Almost surely, 2^6944418857 is an apocalyptic number.

It is an amenable number.

6944418857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6944418857 is an equidigital number, since it uses as much as digits as its factorization.

6944418857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7741440, while the sum is 56.

The square root of 6944418857 is about 83333.1798085252. The cubic root of 6944418857 is about 1907.8547276944.

The spelling of 6944418857 in words is "six billion, nine hundred forty-four million, four hundred eighteen thousand, eight hundred fifty-seven".