168350185189 has 2 divisors, whose sum is σ = 168350185190. Its totient is φ = 168350185188.

The previous prime is 168350185109. The next prime is 168350185193. The reversal of 168350185189 is 981581053861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156827880225 + 11522304964 = 396015^2 + 107342^2 .

It is a cyclic number.

It is not a de Polignac number, because 168350185189 - 2¹⁹ = 168349660901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168350185109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84175092594 + 84175092595.

It is an arithmetic number, because the mean of its divisors is an integer number (84175092595).

Almost surely, 2^168350185189 is an apocalyptic number.

It is an amenable number.

168350185189 is a deficient number, since it is larger than the sum of its proper divisors (1).

168350185189 is an equidigital number, since it uses as much as digits as its factorization.

168350185189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2073600, while the sum is 55.

The spelling of 168350185189 in words is "one hundred sixty-eight billion, three hundred fifty million, one hundred eighty-five thousand, one hundred eighty-nine".