I gave you my values, what do you want me to say? You will note there is a delta between the "maintain weight" and "lose weight" value meaning any value between them will maintain your weight.
No, any value between them will lose weight more slowly.
Another site referencing 1600 as the lower end:
Right, 1600 is the lower end for older women.
"Sedentary men, who get little or no exercise, should consume only 2,200 to 2,400 calories per day."
"Sedentary adult women should consume no more than 1,800 calories per day, and older women need between 1,600 and 2,200 calories per day depending on how active they are."