A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1960980 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 20 21 23 28 29 30 35 42 46 49 58 60 69 70 84 87 92 98 105 115 116 138 140 145 147 161 174 196 203 210 230 245 276 290 294 322 345 348 406 420 435 460 483 490 580 588 609 644 667 690 735 805 812 870 966 980 1,015 1,127 1,218 1,334 1,380 1,421 1,470 1,610 1,740 1,932 2,001 2,030 2,254 2,415 2,436 2,668 2,842 2,940 3,045 3,220 3,335 3,381 4,002 4,060 4,263 4,508 4,669 4,830 5,635 5,684 6,090 6,670 6,762 7,105 8,004 8,526 9,338 9,660 10,005 11,270 12,180 13,340 13,524 14,007 14,210 16,905 17,052 18,676 20,010 21,315 22,540 23,345 28,014 28,420 32,683 33,810 40,020 42,630 46,690 56,028 65,366 67,620 70,035 85,260 93,380 98,049 130,732 140,070 163,415 196,098 280,140 326,830 392,196 490,245 653,660 980,490 and 1,960,980, with no remainder.
Since 1,960,980 cannot be divided by just 1 and 1,960,980, it is not a prime number.