195289 has 4 divisors (see below), whose sum is σ = 196560. Its totient is φ = 194020.

The previous prime is 195281. The next prime is 195311. The reversal of 195289 is 982591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 982591 = 139 ⋅7069.

It is a cyclic number.

It is not a de Polignac number, because 195289 - 2³ = 195281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367 + ... + 724.

It is an arithmetic number, because the mean of its divisors is an integer number (49140).

195289 is a Friedman number, since it can be written as (5^8-9)/2-19, using all its digits and the basic arithmetic operations.

2¹⁹⁵²⁸⁹ is an apocalyptic number.

It is an amenable number.

195289 is a deficient number, since it is larger than the sum of its proper divisors (1271).

195289 is a wasteful number, since it uses less digits than its factorization.

195289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270.

The product of its digits is 6480, while the sum is 34.

The square root of 195289 is about 441.9151502268. The cubic root of 195289 is about 58.0175333436.

It can be divided in two parts, 195 and 289, that added together give a palindrome (484).

The spelling of 195289 in words is "one hundred ninety-five thousand, two hundred eighty-nine".