Let's determine if it is possible to warm up an apartment by leaving the door of a hot oven open.
When you leave the door of a hot oven open, it is possible the heat will warm up the apartment this is because the heat from the oven will dissipated to the surroundings.
If you leave a stove on in a room, the temperature of the room will increase which will cause the surroundings to warm up.
This also applies to the heat from a hot oven (although it is dangerous and not a safe method to warm up a room).
ANSWER:
Yes, it is possible.