8148181 has 2 divisors, whose sum is σ = 8148182. Its totient is φ = 8148180.

The previous prime is 8148137. The next prime is 8148191. The reversal of 8148181 is 1818418.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5616900 + 2531281 = 2370^2 + 1591^2 .

It is a cyclic number.

It is not a de Polignac number, because 8148181 - 2¹¹ = 8146133 is a prime.

It is a super-2 number, since 2×8148181² = 132785707217522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8148191) 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 as a sum of consecutive naturals, namely, 4074090 + 4074091.

It is an arithmetic number, because the mean of its divisors is an integer number (4074091).

Almost surely, 2^8148181 is an apocalyptic number.

It is an amenable number.

8148181 is a deficient number, since it is larger than the sum of its proper divisors (1).

8148181 is an equidigital number, since it uses as much as digits as its factorization.

8148181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2048, while the sum is 31.

The square root of 8148181 is about 2854.5018829911. The cubic root of 8148181 is about 201.2272949965.

The spelling of 8148181 in words is "eight million, one hundred forty-eight thousand, one hundred eighty-one".