If you are seeing this as a notification or a file you didn't expect to download: What's the (number) Added to Some of My Downloads?
: The string could be a part of an MD5, SHA-1, or SHA-256 hash used to verify file integrity and ensure the file hasn't been corrupted or tampered with during transfer. Download File 634D182C870828E4581358F1B79746C52...
When you see a file with a long, complex name like this, it often occurs for one of the following reasons: Common Reasons for "Encoded" Filenames If you are seeing this as a notification