8981212168 has 16 divisors (see below), whose sum is σ = 17294902380. Its totient is φ = 4369238208.

The previous prime is 8981212139. The next prime is 8981212169. The reversal of 8981212168 is 8612121898.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6133709124 + 2847503044 = 78318^2 + 53362^2 .

It is a super-3 number, since 3×8981212168³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (8981212169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15170671 + ... + 15171262.

Almost surely, 2^8981212168 is an apocalyptic number.

It is an amenable number.

8981212168 is a deficient number, since it is larger than the sum of its proper divisors (8313690212).

8981212168 is a wasteful number, since it uses less digits than its factorization.

8981212168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30341976 (or 30341972 counting only the distinct ones).

The product of its digits is 110592, while the sum is 46.

The square root of 8981212168 is about 94769.2575047415. The cubic root of 8981212168 is about 2078.6353974657.

The spelling of 8981212168 in words is "eight billion, nine hundred eighty-one million, two hundred twelve thousand, one hundred sixty-eight".