A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3519360 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 32 36 39 40 45 47 48 52 60 64 65 72 78 80 90 94 96 104 117 120 128 130 141 144 156 160 180 188 192 195 208 234 235 240 260 282 288 312 320 360 376 384 390 416 423 468 470 480 520 564 576 585 611 624 640 705 720 752 780 832 846 936 940 960 1,040 1,128 1,152 1,170 1,222 1,248 1,410 1,440 1,504 1,560 1,664 1,692 1,833 1,872 1,880 1,920 2,080 2,115 2,256 2,340 2,444 2,496 2,820 2,880 3,008 3,055 3,120 3,384 3,666 3,744 3,760 4,160 4,230 4,512 4,680 4,888 4,992 5,499 5,640 5,760 6,016 6,110 6,240 6,768 7,332 7,488 7,520 8,320 8,460 9,024 9,165 9,360 9,776 10,998 11,280 12,220 12,480 13,536 14,664 14,976 15,040 16,920 18,048 18,330 18,720 19,552 21,996 22,560 24,440 24,960 27,072 27,495 29,328 30,080 33,840 36,660 37,440 39,104 43,992 45,120 48,880 54,144 54,990 58,656 67,680 73,320 74,880 78,208 87,984 90,240 97,760 109,980 117,312 135,360 146,640 175,968 195,520 219,960 234,624 270,720 293,280 351,936 391,040 439,920 586,560 703,872 879,840 1,173,120 1,759,680 and 3,519,360, with no remainder.
Since 3,519,360 cannot be divided by just 1 and 3,519,360, it is not a prime number.