The number 3,785,544 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 18 21 24 28 29 36 37 42 49 56 58 63 72 74 84 87 98 111 116 126 147 148 168 174 196 203 222 232 252 259 261 294 296 333 348 392 406 441 444 504 518 522 588 609 666 696 777 812 882 888 1,036 1,044 1,073 1,176 1,218 1,332 1,421 1,554 1,624 1,764 1,813 1,827 2,072 2,088 2,146 2,331 2,436 2,664 2,842 3,108 3,219 3,528 3,626 3,654 4,263 4,292 4,662 4,872 5,439 5,684 6,216 6,438 7,252 7,308 7,511 8,526 8,584 9,324 9,657 10,878 11,368 12,789 12,876 14,504 14,616 15,022 16,317 17,052 18,648 19,314 21,756 22,533 25,578 25,752 30,044 32,634 34,104 38,628 43,512 45,066 51,156 52,577 60,088 65,268 67,599 77,256 90,132 102,312 105,154 130,536 135,198 157,731 180,264 210,308 270,396 315,462 420,616 473,193 540,792 630,924 946,386 1,261,848 1,892,772 and 3,785,544, with no remainder.
Since 3,785,544 cannot be divided by just 1 and 3,785,544, it is a composite number.