165100189 has 2 divisors, whose sum is σ = 165100190. Its totient is φ = 165100188.

The previous prime is 165100147. The next prime is 165100213. The reversal of 165100189 is 981001561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87572164 + 77528025 = 9358^2 + 8805^2 .

It is a cyclic number.

It is not a de Polignac number, because 165100189 - 2²⁷ = 30882461 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165100189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165100589) 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, 82550094 + 82550095.

It is an arithmetic number, because the mean of its divisors is an integer number (82550095).

Almost surely, 2^165100189 is an apocalyptic number.

It is an amenable number.

165100189 is a deficient number, since it is larger than the sum of its proper divisors (1).

165100189 is an equidigital number, since it uses as much as digits as its factorization.

165100189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 165100189 is about 12849.1318383773. The cubic root of 165100189 is about 548.5916463741.

The spelling of 165100189 in words is "one hundred sixty-five million, one hundred thousand, one hundred eighty-nine".