Is believing in spiritual numbers, or what are called "angel numbers," and the meanings and signs they carry, considered polytheism (shirk), divination, and magic?

Spiritual numbers have no basis, and angels have no connection to them. To claim otherwise is to speak about Allah without knowledge, which is strictly forbidden. These claims are charlatanism and sorcery, and have no basis in Islamic law. Repeatedly seeing numbers is an obsessive-compulsive delusion whose cure lies in ignoring it.