8890808081 has 4 divisors (see below), whose sum is σ = 9197387700. Its totient is φ = 8584228464.

The previous prime is 8890808077. The next prime is 8890808137. The reversal of 8890808081 is 1808080988.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7079539600 + 1811268481 = 84140^2 + 42559^2 .

It is a cyclic number.

It is not a de Polignac number, because 8890808081 - 2² = 8890808077 is a prime.

It is a super-2 number, since 2×8890808081² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8890808051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153289766 + ... + 153289823.

It is an arithmetic number, because the mean of its divisors is an integer number (2299346925).

Almost surely, 2^8890808081 is an apocalyptic number.

It is an amenable number.

8890808081 is a deficient number, since it is larger than the sum of its proper divisors (306579619).

8890808081 is a wasteful number, since it uses less digits than its factorization.

8890808081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306579618.

The product of its (nonzero) digits is 294912, while the sum is 50.

The square root of 8890808081 is about 94291.0816620533. The cubic root of 8890808081 is about 2071.6374109771.

The spelling of 8890808081 in words is "eight billion, eight hundred ninety million, eight hundred eight thousand, eighty-one".