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#1
Am I on the Anniversary Update?
I'm running Win 10 Pro 64, version 10.0.14393.
x509
The 14393 is the Build number and has .xxx following. The Version is either 1511 or 1607, mine is Version 1607 Build 14393.222, the .222 is for the latest update I've received. Yours also has to be Version 1607 Build 14393.xxx. The previous Build number on mine was 14393.187. The 1511 stands for the release of November 2015 and 1607 is for July 2016 or the 1-year Anniversary.
Just to add to Berton's post, hit the Windows key and type winver and you will get this:
Or in about in settings:
To see if you are totally up to date go to: Windows 10 release information - current branch, build history
And you will see this chart: