If you wanna dig deeper there's a docu about history of mathematics on YouTube if it isn't removed :-)

We've covered all his topics either in computer science, applied maths or engineering mathematics back in varsity days. The graph theory might be useful for an architect and maybe the encryption topic but the rest seems less useful unless you're doing something specific in a specific field in which case his work would be too general / broad to be of use.

If you haven't touched those subjects in varsity, it might still be a good introduction.