I'm not sure about the other stats, but you can get the total books number using a slight work-around:
- from your library page select the menu at the top right
- under MULTI-SELECT, click on Select all visible
That take you back to your library page with all the books checked. DON'T HIT DELETE !!
At the top, in the middle is a red check with the total number of books selected.
To remove the checks, select the menu item at the top right again and select Unselect all.
This technique can be used to count all the books in any view/filter/collection. To make sure you get ALL your books tap the middle-top of you library page (where the Marvin logo is) and select Back to all your books.
Cheers!