To protect your information, your full bank account information is passed directly to Stripe, our payments processor, and is not stored by Kickstarter. Therefore it’s not possible to check the full account number.
However, you can find the last four digits of the bank account currently associated with your project on the Funding Summary page. To see this information, select ‘Dashboard’ from the creator tools menu, located on the left side of your project page, and click on the blue "View funding summary" link.
If you believe that your bank details may have been incorrectly entered, or are outdated after launching, please refer to this article.