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.
Look at the website or application where you first saw this filename; it is usually specific to that platform's database. 2964858669662.mp4
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