• 194 can be written using four 4's:
194 is nontrivially palindromic in base 3.
194 is an esthetic number in base 3, base 5 and base 14, because in such bases its adjacent digits differ by 1.
It is a semiprime because it is the product of two primes.
It is a Curzon number.
It is a plaindrome in base 5, base 9, base 11, base 13 and base 15.
It is a nialpdrome in base 6, base 14 and base 16.
It is a congruent number.
194 is an equidigital number, since it uses as much as digits as its factorization.
194 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 99.
The square root of 194 is about 13.9283882772. The cubic root of 194 is about 5.7889603721.
The spelling of 194 in words is "one hundred ninety-four", and thus it is an aban number.