194105 has 4 divisors (see below), whose sum is σ = 232932. Its totient is φ = 155280.

The previous prime is 194101. The next prime is 194113. The reversal of 194105 is 501491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501491 = 503 ⋅997.

It can be written as a sum of positive squares in 2 ways, for example, as 94249 + 99856 = 307^2 + 316^2 .

It is not a de Polignac number, because 194105 - 2² = 194101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (194101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19406 + ... + 19415.

It is an arithmetic number, because the mean of its divisors is an integer number (58233).

2¹⁹⁴¹⁰⁵ is an apocalyptic number.

It is an amenable number.

194105 is a deficient number, since it is larger than the sum of its proper divisors (38827).

194105 is an equidigital number, since it uses as much as digits as its factorization.

194105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38826.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 194105 is about 440.5734898970. The cubic root of 194105 is about 57.9000458376.

Adding to 194105 its reverse (501491), we get a palindrome (695596).

The spelling of 194105 in words is "one hundred ninety-four thousand, one hundred five".