No it isn’t, Mormons believe in three gods and that the father was once a human like us.
God “was once as one of us” and “all the spirits that God ever sent into the world” were likewise “susceptible of enlargement.” Joseph Smith preached that long before the world was formed, God found “himself in the midst” of these beings and “saw proper to institute laws whereby the rest could have a privilege to advance like himself”
But where Latter-day Saints differ from other Christian religions is in their belief that God and Jesus Christ are glorified, physical beings and that each member of the Godhead is a separate being.