6891046973 has 2 divisors, whose sum is σ = 6891046974. Its totient is φ = 6891046972.

The previous prime is 6891046933. The next prime is 6891046979. The reversal of 6891046973 is 3796401986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3662307289 + 3228739684 = 60517^2 + 56822^2 .

It is a cyclic number.

It is not a de Polignac number, because 6891046973 - 2⁸ = 6891046717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6891046979) 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, 3445523486 + 3445523487.

It is an arithmetic number, because the mean of its divisors is an integer number (3445523487).

Almost surely, 2^6891046973 is an apocalyptic number.

It is an amenable number.

6891046973 is a deficient number, since it is larger than the sum of its proper divisors (1).

6891046973 is an equidigital number, since it uses as much as digits as its factorization.

6891046973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 6891046973 is about 83012.3302467772. The cubic root of 6891046973 is about 1902.9544959967.

The spelling of 6891046973 in words is "six billion, eight hundred ninety-one million, forty-six thousand, nine hundred seventy-three".