Sphere

Radius	Defines the radius of the sphere.
Rotation Segments	Defines the degree of the subdivision. The sphere is divided along its latitude and longitude.
Gen UV	Generate spherical UV coordinates.
Gen Normals	Generate normals.
Main Axis	Gives an ability to select the object’s initial orientation in space, without using transformation matrix. .
Enabled	When enabled, sphere will be created. If not checked, this will be empty node.