With　the　rapid　increase　of　mobile　data　traffic,　efficient　content　delivery　in　wireless　networks　is　increasingly　important　to　provide　broadcast　and　multicast　services.　To　reduce　network　cost　and　enrich　end-user　quality　of　experience,　Internet　service　providers　(ISPs)　and　content　providers　(CPs)　are　expected　to　collaborate　to　improve　content　delivery　services.　However,　the　influence　of　content　popularity　has　been　generally　overlooked,　and　profit　split　problem　between　ISPs　and　CPs　has　not　been　studied.　We　investigate　the　novel　economic　behaviors　between　ISPs　and　CPs　in　the　presence　of　edge　caches,　and　formulate　the　profit　split　problem　as　a　centralized　model,　which　can　achieve　optimal　content　caching　and　maximal　network　benefits.　A　Stackelberg　game　is　designed　to　obtain　its　distributed　win-win　solution,　where　a　feasible　backward　induction　is　proposed　and　the　influence　of　edge　caches　and　content　popularity　is　analyzed.　Simulation　results　show　that　the　performance　of　our　proposed　Stackelberg　game　model　is　comparable　to　the　centralized　alternative　and　much　better　than　existing　ISP-CP　cooperative　schemes　not　considering　cache　deployment　in　the　network.