6918943 has 2 divisors, whose sum is σ = 6918944. Its totient is φ = 6918942.

The previous prime is 6918853. The next prime is 6918953. The reversal of 6918943 is 3498196.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6918943 - 2¹⁷ = 6787871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6918896 and 6918905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6918953) 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, 3459471 + 3459472.

It is an arithmetic number, because the mean of its divisors is an integer number (3459472).

Almost surely, 2^6918943 is an apocalyptic number.

6918943 is a deficient number, since it is larger than the sum of its proper divisors (1).

6918943 is an equidigital number, since it uses as much as digits as its factorization.

6918943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 6918943 is about 2630.3883743660. The cubic root of 6918943 is about 190.5518857114.

The spelling of 6918943 in words is "six million, nine hundred eighteen thousand, nine hundred forty-three".