195489 has 24 divisors (see below), whose sum is σ = 336960. Its totient is φ = 106848.

The previous prime is 195479. The next prime is 195493. The reversal of 195489 is 984591.

It is not a de Polignac number, because 195489 - 2⁵ = 195457 is a prime.

195489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (195469) 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 23 ways as a sum of consecutive naturals, for example, 1774 + ... + 1880.

It is an arithmetic number, because the mean of its divisors is an integer number (14040).

2¹⁹⁵⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

195489 is a deficient number, since it is larger than the sum of its proper divisors (141471).

195489 is a wasteful number, since it uses less digits than its factorization.

195489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 146 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 195489 is about 442.1413801037. The cubic root of 195489 is about 58.0373322874.

The spelling of 195489 in words is "one hundred ninety-five thousand, four hundred eighty-nine".