"The 861146" is the name of a boat appearing in Joseph Conrad's novella Heart of Darkness.

(A) WARM UP :

1. 2614860 means Renewed Inner Material. Find it.

(B) TOUGHER :

1. 3625 1788 represents the name of a famous English singer and entertainer. Find it.
2. 1926**5 1788 represents the name of a famous (U.S.) country music singer. Find it.

Note: Each asterisk represents a letter, whether same or different.