195818 has 16 divisors (see below), whose sum is σ = 342144. Its totient is φ = 82320.

The previous prime is 195817. The next prime is 195863. The reversal of 195818 is 818591.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (195817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896 + ... + 1092.

It is an arithmetic number, because the mean of its divisors is an integer number (21384).

2¹⁹⁵⁸¹⁸ is an apocalyptic number.

195818 is a deficient number, since it is larger than the sum of its proper divisors (146326).

195818 is a wasteful number, since it uses less digits than its factorization.

195818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277.

The product of its digits is 2880, while the sum is 32.

The square root of 195818 is about 442.5132766370. The cubic root of 195818 is about 58.0698721928.

The spelling of 195818 in words is "one hundred ninety-five thousand, eight hundred eighteen".