A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4738230 can be evenly divided by 1 2 3 5 6 7 9 10 14 15 18 21 23 27 30 35 42 45 46 54 63 69 70 90 105 109 115 126 135 138 161 189 207 210 218 230 270 315 322 327 345 378 414 483 545 621 630 654 690 763 805 945 966 981 1,035 1,090 1,242 1,449 1,526 1,610 1,635 1,890 1,962 2,070 2,289 2,415 2,507 2,898 2,943 3,105 3,270 3,815 4,347 4,578 4,830 4,905 5,014 5,886 6,210 6,867 7,245 7,521 7,630 8,694 9,810 11,445 12,535 13,734 14,490 14,715 15,042 17,549 20,601 21,735 22,563 22,890 25,070 29,430 34,335 35,098 37,605 41,202 43,470 45,126 52,647 67,689 68,670 75,210 87,745 103,005 105,294 112,815 135,378 157,941 175,490 206,010 225,630 263,235 315,882 338,445 473,823 526,470 676,890 789,705 947,646 1,579,410 2,369,115 and 4,738,230, with no remainder.
Since 4,738,230 cannot be divided by just 1 and 4,738,230, it is not a prime number.