195878 has 8 divisors (see below), whose sum is σ = 301872. Its totient is φ = 95256.

The previous prime is 195869. The next prime is 195883. The reversal of 195878 is 878591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a nialpdrome in base 12.

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 195878.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250 + ... + 1397.

It is an arithmetic number, because the mean of its divisors is an integer number (37734).

2¹⁹⁵⁸⁷⁸ is an apocalyptic number.

195878 is a deficient number, since it is larger than the sum of its proper divisors (105994).

195878 is a wasteful number, since it uses less digits than its factorization.

195878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686.

The product of its digits is 20160, while the sum is 38.

The square root of 195878 is about 442.5810660207. The cubic root of 195878 is about 58.0758025916.

The spelling of 195878 in words is "one hundred ninety-five thousand, eight hundred seventy-eight".