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$q$-ADDITIVE FUNCTIONS AND DISTRIBUTIONAL PROPERTIES OF THE LARGEST PRIME FACTOR
Let 
$P(n)$ denote the largest prime factor of an integer 
$n\geq 2$. In this paper, we study the distribution of the sequence 
$\{f(P(n)):n\geq 1\}$ over the set of congruence classes modulo an integer 
$b\geq 2$, where 
$f$ is a strongly 
$q$-additive integer-valued function (that is, 
$f(aq^{j}+b)=f(a)+f(b),$ with 
$(a,b,j)\in \mathbb{N}^{3}$, 
$0\leq b<q^{j}$). We also show that the sequence 
$\{{\it\alpha}P(n):n\geq 1,f(P(n))\equiv a\;(\text{mod}~b)\}$ is uniformly distributed modulo 1 if and only if 
${\it\alpha}\in \mathbb{R}\!\setminus \!\mathbb{Q}$.
