194805 has 40 divisors (see below), whose sum is σ = 386232. Its totient is φ = 93312.

The previous prime is 194771. The next prime is 194809. The reversal of 194805 is 508491.

It can be written as a sum of positive squares in 4 ways, for example, as 23409 + 171396 = 153^2 + 414^2 .

It is not a de Polignac number, because 194805 - 2¹¹ = 192757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 194805.

It is not an unprimeable number, because it can be changed into a prime (194809) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5247 + ... + 5283.

2¹⁹⁴⁸⁰⁵ is an apocalyptic number.

194805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194805 is a deficient number, since it is larger than the sum of its proper divisors (191427).

194805 is a wasteful number, since it uses less digits than its factorization.

194805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 194805 is about 441.3671940686. The cubic root of 194805 is about 57.9695638964.

It can be divided in two parts, 194 and 805, that added together give a palindrome (999).

The spelling of 194805 in words is "one hundred ninety-four thousand, eight hundred five".