195803 has 4 divisors (see below), whose sum is σ = 197808. Its totient is φ = 193800.

The previous prime is 195791. The next prime is 195809. The reversal of 195803 is 308591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 308591 = 23 ⋅13417.

It is a cyclic number.

It is not a de Polignac number, because 195803 - 2⁴ = 195787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195809) by changing a digit.

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, 848 + ... + 1053.

It is an arithmetic number, because the mean of its divisors is an integer number (49452).

2¹⁹⁵⁸⁰³ is an apocalyptic number.

195803 is a deficient number, since it is larger than the sum of its proper divisors (2005).

195803 is a wasteful number, since it uses less digits than its factorization.

195803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 195803 is about 442.4963276684. The cubic root of 195803 is about 58.0683894038.

The spelling of 195803 in words is "one hundred ninety-five thousand, eight hundred three".