Firstly, that's not your real internet IP, it's just showing your lan IP. What you need to do for others (random people) to join is to open up the port you have chosen in your dedicated server through your modem/router. You can see www.portforward.com for details on how to do that, depending on your modem/router model.
And if you want to be able to give other people your server's IP address so they can join (after you have forwarded your port as I said before), try going on http://www.whatismyip.org/ and give them that IP.
Be warned though, since your IP is dynamic, you'll have to check for the new one every time you open your server.
If you want to set like a host name that forwards to your ip, like lets say "random@game-server.cc", which people can use instead, like by typing "random@game-server.cc:27015" in the server box, go on www.dyndns.com and get it's free dns hosting option. Just follow the instructions and you'll manage.
They even have a software available that you can download from the site that automatically updates the host name with your new IP.
Change to dynamic ip on internet explorer