7663962818 has 18 divisors (see below), whose sum is σ = 11627986617. Its totient is φ = 3788463600.

The previous prime is 7663962811. The next prime is 7663962829. The reversal of 7663962818 is 8182693667.

It can be written as a sum of positive squares in 2 ways, for example, as 6637849729 + 1026113089 = 81473^2 + 32033^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=61903.

It is a super-2 number, since 2×7663962818² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7663962811) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12751718 + ... + 12752318.

Almost surely, 2^7663962818 is an apocalyptic number.

7663962818 is a deficient number, since it is larger than the sum of its proper divisors (3964023799).

7663962818 is an frugal number, since it uses more digits than its factorization.

7663962818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 706 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 56.

The square root of 7663962818 is about 87544.0621515817. The cubic root of 7663962818 is about 1971.5954006542.

The spelling of 7663962818 in words is "seven billion, six hundred sixty-three million, nine hundred sixty-two thousand, eight hundred eighteen".