194609 has 2 divisors, whose sum is σ = 194610. Its totient is φ = 194608.

The previous prime is 194591. The next prime is 194647. The reversal of 194609 is 906491.

194609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107584 + 87025 = 328^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 194609 - 2⁸ = 194353 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (194659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97304 + 97305.

It is an arithmetic number, because the mean of its divisors is an integer number (97305).

2¹⁹⁴⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

194609 is a deficient number, since it is larger than the sum of its proper divisors (1).

194609 is an equidigital number, since it uses as much as digits as its factorization.

194609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 194609 is about 441.1451008455. The cubic root of 194609 is about 57.9501156494.

It can be divided in two parts, 19 and 4609, that multiplied together give a triangular number (87571 = T₄₁₈).

The spelling of 194609 in words is "one hundred ninety-four thousand, six hundred nine".