6645492179 has 2 divisors, whose sum is σ = 6645492180. Its totient is φ = 6645492178.

The previous prime is 6645492163. The next prime is 6645492229. The reversal of 6645492179 is 9712945466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6645492179 - 2⁴ = 6645492163 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6645492179.

It is not a weakly prime, because it can be changed into another prime (6645492779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3322746089 + 3322746090.

It is an arithmetic number, because the mean of its divisors is an integer number (3322746090).

Almost surely, 2^6645492179 is an apocalyptic number.

6645492179 is a deficient number, since it is larger than the sum of its proper divisors (1).

6645492179 is an equidigital number, since it uses as much as digits as its factorization.

6645492179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 53.

The square root of 6645492179 is about 81519.8882420726. Note that the first 3 decimals coincide. The cubic root of 6645492179 is about 1880.0773488434.

The spelling of 6645492179 in words is "six billion, six hundred forty-five million, four hundred ninety-two thousand, one hundred seventy-nine".