170000189 has 2 divisors, whose sum is σ = 170000190. Its totient is φ = 170000188.

The previous prime is 170000177. The next prime is 170000191. The reversal of 170000189 is 981000071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163584100 + 6416089 = 12790^2 + 2533^2 .

It is a cyclic number.

It is not a de Polignac number, because 170000189 - 2⁸ = 169999933 is a prime.

Together with 170000191, it forms a pair of twin primes.

It is a Chen prime.

170000189 is a modest number, since divided by 189 gives 170 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170005189) 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, 85000094 + 85000095.

It is an arithmetic number, because the mean of its divisors is an integer number (85000095).

Almost surely, 2^170000189 is an apocalyptic number.

It is an amenable number.

170000189 is a deficient number, since it is larger than the sum of its proper divisors (1).

170000189 is an equidigital number, since it uses as much as digits as its factorization.

170000189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 170000189 is about 13038.4120582224. The cubic root of 170000189 is about 553.9660309686.

The spelling of 170000189 in words is "one hundred seventy million, one hundred eighty-nine", and thus it is an aban number.