8008181 has 2 divisors, whose sum is σ = 8008182. Its totient is φ = 8008180.

The previous prime is 8008159. The next prime is 8008211. The reversal of 8008181 is 1818008.

8008181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7980625 + 27556 = 2825^2 + 166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8008181 is a prime.

It is a super-2 number, since 2×8008181² = 128261925857522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8008181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8008081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4004090 + 4004091.

It is an arithmetic number, because the mean of its divisors is an integer number (4004091).

Almost surely, 2^8008181 is an apocalyptic number.

It is an amenable number.

8008181 is a deficient number, since it is larger than the sum of its proper divisors (1).

8008181 is an equidigital number, since it uses as much as digits as its factorization.

8008181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 26.

The square root of 8008181 is about 2829.8729653467. The cubic root of 8008181 is about 200.0681517740.

The spelling of 8008181 in words is "eight million, eight thousand, one hundred eighty-one".