194

Number
$194$ (one hundred and ninety-four) is:


 * $2 \times 97$


 * The $6$th positive integer solution after $1, 3, 15, 104, 164$ to $\map \phi n = \map \phi {n + 1}$:
 * $\map \phi {194} = 96 = \map \phi {195}$


 * The $28$th nontotient:
 * $\nexists m \in \Z_{>0}: \map \phi m = 194$
 * where $\map \phi m$ denotes the Euler $\phi$ function