195894189 has 12 divisors (see below), whose sum is σ = 283341916. Its totient is φ = 130419072.

The previous prime is 195894163. The next prime is 195894191. The reversal of 195894189 is 981498591.

195894189 is a `hidden beast` number, since 19 + 589 + 41 + 8 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 155825289 + 40068900 = 12483^2 + 6330^2 .

It is not a de Polignac number, because 195894189 - 2¹¹ = 195892141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195894089) 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 in 11 ways as a sum of consecutive naturals, for example, 7564 + ... + 21189.

Almost surely, 2^195894189 is an apocalyptic number.

It is an amenable number.

195894189 is a deficient number, since it is larger than the sum of its proper divisors (87447727).

195894189 is a wasteful number, since it uses less digits than its factorization.

195894189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29516 (or 29513 counting only the distinct ones).

The product of its digits is 933120, while the sum is 54.

The square root of 195894189 is about 13996.2205255562. The cubic root of 195894189 is about 580.7740250461.

The spelling of 195894189 in words is "one hundred ninety-five million, eight hundred ninety-four thousand, one hundred eighty-nine".