A .rar file is a "Roshal Archive," a proprietary format used to bundle multiple files into a single, smaller package to save space and make sharing easier.
If you have a file named 198.rar on your computer, it is a compressed archive that requires specialized software to open. This guide explains how to identify, safely open, and handle this file type. 1. Identifying the File 198.rar
If the source is unknown, it could contain anything from software updates to documents or media. 2. How to Open the File 198.rar