I will answer you in the same way I did in the support ticket:
We introduced our new RadDateTimePicker control this Q2 release and we made some required changes with date and time pickers. We tried to make as few changes to the controls as possible. Now RadDatePicker and RadTimePicker controls inherit RadDateTimePicker.
These properties are Obsolete for now. That's the reason they have no effect on the calendar. They will be removed in Q3 release. If you want to disable the week numbers, for example, I would suggest you to set a Style for CalendarStyle property and in this style you could set the value for the property AreWeekNumbersVisible to False. The same is for the other properties.
The main reason to obsolete all these properties is to keep the usage of RadDate/TimePicker in Silverlight and WPF standardized.
All the best,
the Telerik team
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