195718 has 4 divisors (see below), whose sum is σ = 293580. Its totient is φ = 97858.

The previous prime is 195709. The next prime is 195731. The reversal of 195718 is 817591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 817591 = 409 ⋅1999.

It is a self number, because there is not a number n which added to its sum of digits gives 195718.

It is a congruent number.

It is an unprimeable number.

195718 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48928 + ... + 48931.

It is an arithmetic number, because the mean of its divisors is an integer number (73395).

2¹⁹⁵⁷¹⁸ is an apocalyptic number.

195718 is a deficient number, since it is larger than the sum of its proper divisors (97862).

195718 is an equidigital number, since it uses as much as digits as its factorization.

195718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97861.

The product of its digits is 2520, while the sum is 31.

The square root of 195718 is about 442.4002712477. The cubic root of 195718 is about 58.0599855021.

The spelling of 195718 in words is "one hundred ninety-five thousand, seven hundred eighteen".