195143 has 8 divisors (see below), whose sum is σ = 222768. Its totient is φ = 169344.

The previous prime is 195137. The next prime is 195157. The reversal of 195143 is 341591.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 195143 - 2⁴ = 195127 is a prime.

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 195143.

It is not an unprimeable number, because it can be changed into a prime (195103) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 221 + ... + 662.

It is an arithmetic number, because the mean of its divisors is an integer number (27846).

2¹⁹⁵¹⁴³ is an apocalyptic number.

195143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

195143 is a deficient number, since it is larger than the sum of its proper divisors (27625).

195143 is a wasteful number, since it uses less digits than its factorization.

195143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913.

The product of its digits is 540, while the sum is 23.

The square root of 195143 is about 441.7499292586. The cubic root of 195143 is about 58.0030715773.

The spelling of 195143 in words is "one hundred ninety-five thousand, one hundred forty-three".