6845934149 has 2 divisors, whose sum is σ = 6845934150. Its totient is φ = 6845934148.

The previous prime is 6845934143. The next prime is 6845934167. The reversal of 6845934149 is 9414395486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4504825924 + 2341108225 = 67118^2 + 48385^2 .

It is a cyclic number.

It is not a de Polignac number, because 6845934149 - 2⁴ = 6845934133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6845934149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6845934143) 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, 3422967074 + 3422967075.

It is an arithmetic number, because the mean of its divisors is an integer number (3422967075).

Almost surely, 2^6845934149 is an apocalyptic number.

It is an amenable number.

6845934149 is a deficient number, since it is larger than the sum of its proper divisors (1).

6845934149 is an equidigital number, since it uses as much as digits as its factorization.

6845934149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 53.

The square root of 6845934149 is about 82740.1604361510. The cubic root of 6845934149 is about 1898.7927833554.

The spelling of 6845934149 in words is "six billion, eight hundred forty-five million, nine hundred thirty-four thousand, one hundred forty-nine".