Who called from 4149142050

I have received calls from this person only texts they won't talk to me saying that they need a personal assistant.They sent me a check to deposit in my account which I have not done yet.

I would not deposit the check, it is likely bogus. You can probably look up the contact number for the bank it is supposedly drawn on and check with them.  You can also take it to your bank and ask to speak with someone who handles potential fraud. Bring the envelope the check came in and any written instructions on what to do with the check. Let your bank investigate and tell you what they find out.