Il numero romano MMMDCXXXVIII nel sistema decimale vale: 3638.
MMMDCXXXVIII in latino si scrive tria milia sescenti triginta octo,
mentre in italiano tremilaseicentotrentotto.
MMMDCXIX, MMMDCXX, MMMDCXXI, MMMDCXXII, MMMDCXXIII, MMMDCXXIV, MMMDCXXV, MMMDCXXVI, MMMDCXXVII, MMMDCXXVIII, MMMDCXXIX, MMMDCXXX, MMMDCXXXI, MMMDCXXXII, MMMDCXXXIII, MMMDCXXXIV, MMMDCXXXV, MMMDCXXXVI, MMMDCXXXVII, MMMDCXXXIX, MMMDCXL, MMMDCXLI, MMMDCXLII, MMMDCXLIII, MMMDCXLIV, MMMDCXLV, MMMDCXLVI, MMMDCXLVII, MMMDCXLVIII, MMMDCXLIX, MMMDCL, MMMDCLI, MMMDCLII, MMMDCLIII, MMMDCLIV, MMMDCLV, MMMDCLVI, MMMDCLVII