Significant but low interaction coefficient value

I've adjusted a linear model: $$Y = \beta_{0} + \beta_{1}X_{1}+\beta_{2}X_{2}+\beta_{3}X_{3}+\beta_{4}X_{1}X_{2}+\beta_{5}X_{2}X_{3}+\beta_{4}X_{1}X_{3}$$. All coefficients are significant (p<2e-15) but I've observed $$\beta_{4}$$ which is related to the interaction between $$X_{1}$$ and $$X_{4}$$ has a pretty low value itself. I was wondering if I can say that regardless significant it has no effect.

Besides, can is a low value of interaction coefficient an evidence of no need of interaction? Are there any kind of difference in the interpretation of low level main effect or low level interaction effect?

$$\beta_4$$ seems to be the coefficient for the interaction between $$X_1$$ and $$X_3$$, not between $$X_1$$ and $$X_4$$ as stated in the question.