195983 has 4 divisors (see below), whose sum is σ = 204528. Its totient is φ = 187440.

The previous prime is 195977. The next prime is 195991. The reversal of 195983 is 389591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195983 - 2⁴ = 195967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195913) 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, 4238 + ... + 4283.

It is an arithmetic number, because the mean of its divisors is an integer number (51132).

2¹⁹⁵⁹⁸³ is an apocalyptic number.

195983 is a deficient number, since it is larger than the sum of its proper divisors (8545).

195983 is an equidigital number, since it uses as much as digits as its factorization.

195983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8544.

The product of its digits is 9720, while the sum is 35.

The square root of 195983 is about 442.6996724643. The cubic root of 195983 is about 58.0861778762.

The spelling of 195983 in words is "one hundred ninety-five thousand, nine hundred eighty-three".