In NATIONAL format, aka ITU-T Recommendation E123, the number is written (978) 610-8318
Likewise, in E123 INTERNATIONAL formal, it is written +1 978-610-8318
In E.164 standard format, the number is written +19786108318. E164 format is as per E123 INTERNATIONAL format but with no formatting applied.
In RFC3966 standard format, the number is written tel:+1-978-610-8318. FC3966 is as per INTERNATIONAL format, but with all spaces and other separating symbols replaced with a hyphen, and with any phone number extension appended with ";ext=". It also will have a prefix of "tel:" added .
To dial this number from within the United States, one would dial 1 (978) 610-8318
To dial this number from inside the United Kingdom or the European Union, one would dial 00 1 978-610-8318
Numbers like +19786108318 may be located in the America/New_York timezone, where the local time is currently Saturday the 6th of June 2020 11:40:38 PM.