Because this filename isn't associated with a widely known viral video or a public media archive, its "interesting feature" depends entirely on the context of where it was found:
It could be a unique ID for a video asset used in advertising or specialized software training, as detailed by Darvideo Animation Studio regarding software feature videos. 2964858669662.mp4
Google often uses metadata to identify Key Moments within videos to help users skip to the most relevant parts. How to find the actual content: Because this filename isn't associated with a widely
If you have the file, right-click it and select "Properties" (Windows) or "Get Info" (Mac) to see the creation date or source URL. It likely represents a timestamped event
It likely represents a timestamped event. Many security cameras name files with long numeric strings that encode the date, time, and camera ID.