<div class="input-append date datepicker">
    <input type="text" b-datepicker ng-model="date"/>
    <span class="add-on" ><i class="icon-calendar"></i></span>
</div>

.config(function($datepickerProvider) {
  angular.extend($datepickerProvider.defaults, {
    dateFormat: 'dd/MM/yyyy',
    startWeek: 1
  });
})

<input type="text"
    class="form-control"
    ng-model="selectedDateAsNumber"
    data-date-format="yyyy-MM-dd"
    data-date-type="number"
    data-min-date="02/10/86"
    data-max-date="today"
    data-autoclose="1"
    name="date2"
    bs-datepicker>