diff --git a/sqlglot/tokens.py b/sqlglot/tokens.py
index c89592ad26..6f28e452f2 100644
--- a/sqlglot/tokens.py
+++ b/sqlglot/tokens.py
@@ -995,7 +995,7 @@ def _scan_number(self) -> None:
                 self._advance()
             elif self._peek == "." and not decimal:
                 after = self.peek(1)
-                if after.isdigit() or not after.strip():
+                if after.isdigit() or not after.isalpha():
                     decimal = True
                     self._advance()
                 else:
diff --git a/tests/fixtures/identity.sql b/tests/fixtures/identity.sql
index 5e3bfd976e..cf3943291a 100644
--- a/tests/fixtures/identity.sql
+++ b/tests/fixtures/identity.sql
@@ -1,7 +1,11 @@
 SUM(1)
 SUM(CASE WHEN x > 1 THEN 1 ELSE 0 END) / y
 1
+(1)
+1.
+(1.)
 1.0
+(1.0)
 1E2
 1E+2
 1E-2