• 194 can be written using four 4's:

194 has 4 divisors (see below), whose sum is σ = 294. Its totient is φ = 96.

The previous prime is 193. The next prime is 197. The reversal of 194 is 491.

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 can be written as a sum of positive squares in only one way, i.e., 169 + 25 = 13^2 + 5^2 .

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.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47 + ... + 50.

194 is a deficient number, since it is larger than the sum of its proper divisors (100).

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 product of its digits is 36, while the sum is 14.

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.

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