1810645906163 has 2 divisors, whose sum is σ = 1810645906164. Its totient is φ = 1810645906162.

The previous prime is 1810645906151. The next prime is 1810645906241. The reversal of 1810645906163 is 3616095460181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1810645906163 - 2⁶ = 1810645906099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1810645906123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 905322953081 + 905322953082.

It is an arithmetic number, because the mean of its divisors is an integer number (905322953082).

Almost surely, 2^{1810645906163} is an apocalyptic number.

1810645906163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1810645906163 is an equidigital number, since it uses as much as digits as its factorization.

1810645906163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 1810645906163 in words is "one trillion, eight hundred ten billion, six hundred forty-five million, nine hundred six thousand, one hundred sixty-three".