195993 has 32 divisors (see below), whose sum is σ = 357120. Its totient is φ = 103680.

The previous prime is 195991. The next prime is 195997. The reversal of 195993 is 399591.

It is not a de Polignac number, because 195993 - 2¹ = 195991 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3183 + ... + 3243.

It is an arithmetic number, because the mean of its divisors is an integer number (11160).

2¹⁹⁵⁹⁹³ is an apocalyptic number.

It is an amenable number.

195993 is a deficient number, since it is larger than the sum of its proper divisors (161127).

195993 is a wasteful number, since it uses less digits than its factorization.

195993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 88 counting only the distinct ones).

The product of its digits is 10935, while the sum is 36.

The square root of 195993 is about 442.7109666588. The cubic root of 195993 is about 58.0871658053.

The spelling of 195993 in words is "one hundred ninety-five thousand, nine hundred ninety-three".