6906845489 has 2 divisors, whose sum is σ = 6906845490. Its totient is φ = 6906845488.

The previous prime is 6906845479. The next prime is 6906845497. The reversal of 6906845489 is 9845486096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3915630625 + 2991214864 = 62575^2 + 54692^2 .

It is a cyclic number.

It is not a de Polignac number, because 6906845489 - 2²⁰ = 6905796913 is a prime.

It is not a weakly prime, because it can be changed into another prime (6906845479) 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, 3453422744 + 3453422745.

It is an arithmetic number, because the mean of its divisors is an integer number (3453422745).

Almost surely, 2^6906845489 is an apocalyptic number.

It is an amenable number.

6906845489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6906845489 is an equidigital number, since it uses as much as digits as its factorization.

6906845489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 59.

The square root of 6906845489 is about 83107.4334160308. The cubic root of 6906845489 is about 1904.4076332554.

The spelling of 6906845489 in words is "six billion, nine hundred six million, eight hundred forty-five thousand, four hundred eighty-nine".