194365 has 4 divisors (see below), whose sum is σ = 233244. Its totient is φ = 155488.

The previous prime is 194353. The next prime is 194371. The reversal of 194365 is 563491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563491 = 163 ⋅3457.

It can be written as a sum of positive squares in 2 ways, for example, as 148996 + 45369 = 386^2 + 213^2 .

It is a cyclic number.

It is not a de Polignac number, because 194365 - 2¹¹ = 192317 is a prime.

It is a Duffinian number.

194365 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19432 + ... + 19441.

It is an arithmetic number, because the mean of its divisors is an integer number (58311).

2¹⁹⁴³⁶⁵ is an apocalyptic number.

It is an amenable number.

194365 is a deficient number, since it is larger than the sum of its proper divisors (38879).

194365 is an equidigital number, since it uses as much as digits as its factorization.

194365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38878.

The product of its digits is 3240, while the sum is 28.

The square root of 194365 is about 440.8684611083. The cubic root of 194365 is about 57.9258863112.

The spelling of 194365 in words is "one hundred ninety-four thousand, three hundred sixty-five".