Android : how to set one number to default in android contacts?

i wanna set one number to default in android contact but i don't know whats should write instead `Phone.NUMBER?

ContentResolver cr = this.getContentResolver();

    Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, projectionPhones,
            ContactsContract.CommonDataKinds.Phone.NUMBER +"=?", new String[]{"09183332222"}, null);

    while(pCur.moveToNext())
    {

        tv.setText(pCur.getString(1));
    }

    ContentValues values = new ContentValues();
    values.put(Phone.DISPLAY_NAME, "Test");

    // values.put(Phone.NUMBER  ,numberToCall);

     values.put(Phone.NUMBER
     ,numberToCall);

    int phones = getContentResolver().update(ContactsContract.RawContacts.CONTENT_URI,values,
           Phone.CONTACT_ID +" = 1812", null);