How do you get the value of a lookup field instead of the record number

How do you get the value of a lookup field instead of the record number

I using the value of a lookup field on a form in another formula on the same form and instead of the value being placed in the formula, the record number is placed there. 

 The formula ----   input.Competitor + " - " + input.Media_Channel + " - " + input.Offer

Competitor is a look up field on this form from another form/table.

When this formula runs, I get the following result


3444267000000037515 - House File - 20% Off All Men's Wear

I get the record #, not the value in the field.  How do i fix this?