194081 has 4 divisors (see below), whose sum is σ = 194964. Its totient is φ = 193200.

The previous prime is 194071. The next prime is 194083. The reversal of 194081 is 180491.

194081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 21025 + 173056 = 145^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 194081 - 2⁶ = 194017 is a prime.

It is a super-2 number, since 2×194081² = 75334869122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (194083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191 + ... + 651.

It is an arithmetic number, because the mean of its divisors is an integer number (48741).

2¹⁹⁴⁰⁸¹ is an apocalyptic number.

It is an amenable number.

194081 is a deficient number, since it is larger than the sum of its proper divisors (883).

194081 is an equidigital number, since it uses as much as digits as its factorization.

194081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 194081 is about 440.5462518283. The cubic root of 194081 is about 57.8976594001.

The spelling of 194081 in words is "one hundred ninety-four thousand, eighty-one".