If you can, subscribe to
the HP Lovercraft Literary Podcast, if you don't already. They did a 4 part examination of Stoker's Dracula last March. Funny and informative, you might pick out some abilities of Dracula.
For example, Dracula apparently could change his appearance at will, to the extent he could have a beard or not. This lead to a funny exchange on exactly how he did that, imaging Dracula grunting and straining and then a *pop* as he shouted "Goatee!", to make a goatee appear. So in short Dracula could at least have some form of Disguise, if of a supernatural sort.
Vlad Tepes certainly had Callous, and I'd guess Dracula should have that as well, but that gets into the territory of any creature that feeds on intelligent beings is going to have Callous.
I would think his language ability in Old Church Slavonic would be low, if he learned it only for Church.
Great start!