crop factor – Using FF lens on APS-C changes lens aperture value?

Someone told me that hen using Full frame lens on APS-C camera (1.5x crop factor) in addition to multiplying focal length by crop factor (e.g. 35mm * 1.5 = 52mm actual focal length on APS-C) you also need to multiply maximum aperture by crop factor e.g. if lens is F/1.8 you F/1.8 * F/1.5 = F/2.7 actual aperture of lens when used on APS-C?

Does aperture value also change when FF lens is mounted on APS-C?