195985489 has 16 divisors (see below), whose sum is σ = 228510720. Its totient is φ = 164621520.

The previous prime is 195985483. The next prime is 195985501. The reversal of 195985489 is 984589591.

It is not a de Polignac number, because 195985489 - 2³ = 195985481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195985481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87862 + ... + 90064.

It is an arithmetic number, because the mean of its divisors is an integer number (14281920).

Almost surely, 2^195985489 is an apocalyptic number.

It is an amenable number.

195985489 is a deficient number, since it is larger than the sum of its proper divisors (32525231).

195985489 is a wasteful number, since it uses less digits than its factorization.

195985489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460.

The product of its digits is 4665600, while the sum is 58.

The square root of 195985489 is about 13999.4817404074. The cubic root of 195985489 is about 580.8642377492.

The spelling of 195985489 in words is "one hundred ninety-five million, nine hundred eighty-five thousand, four hundred eighty-nine".