National Insurance catch up class 2

I was self employed from 2016 to 2019. As I was already under self assessment, I didn't register for National Insurance. Realizing my error I completed CWF1 in October 2022. I need to pay NI for 2016/17, 2017/18 and 2018/19, to bring my NI account up to date. I assume that I can pay the three years at £163.80 per year. is that correct? .

Hi Stephen Lerner,
If you call the National Insurance Helpline on 0300 200 3500 they will be able to check your National Insurance account, advise you of the amounts that
you may pay and provide you with an 18 Digit Number for you to make payment with.  
They will also give you details of our bank account.
Thank you.