The number 3,813,810 can be evenly divided by 1 2 3 5 6 7 10 11 13 14 15 21 22 26 30 33 35 39 42 55 65 66 70 77 78 91 105 110 127 130 143 154 165 182 195 210 231 254 273 286 330 381 385 390 429 455 462 546 635 715 762 770 858 889 910 1,001 1,155 1,270 1,365 1,397 1,430 1,651 1,778 1,905 2,002 2,145 2,310 2,667 2,730 2,794 3,003 3,302 3,810 4,191 4,290 4,445 4,953 5,005 5,334 6,006 6,985 8,255 8,382 8,890 9,779 9,906 10,010 11,557 13,335 13,970 15,015 16,510 18,161 19,558 20,955 23,114 24,765 26,670 29,337 30,030 34,671 36,322 41,910 48,895 49,530 54,483 57,785 58,674 69,342 90,805 97,790 108,966 115,570 127,127 146,685 173,355 181,610 254,254 272,415 293,370 346,710 381,381 544,830 635,635 762,762 1,271,270 1,906,905 and 3,813,810, with no remainder.
Since 3,813,810 cannot be divided by just 1 and 3,813,810, it is a composite number.