3169

Number
$3169$ (three thousand, one hundred and sixty-nine) is:


 * The $449$th prime number


 * The $33$rd centered hexagonal number after $1$, $7$, $19$, $37$, $61$, $91$, $127$, $\ldots$, $1801$, $1951$, $2107$, $2269$, $2437$, $2611$, $2791$, $2977$:
 * $3169 = \displaystyle 1 + \sum_{k \mathop = 1}^{33 - 1} 6 k = 33^3 - 32^3$