8185481 has 2 divisors, whose sum is σ = 8185482. Its totient is φ = 8185480.

The previous prime is 8185469. The next prime is 8185501. The reversal of 8185481 is 1845818.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7513081 + 672400 = 2741^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 8185481 - 2¹⁸ = 7923337 is a prime.

It is a super-3 number, since 3×8185481³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (8185421) 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, 4092740 + 4092741.

It is an arithmetic number, because the mean of its divisors is an integer number (4092741).

Almost surely, 2^8185481 is an apocalyptic number.

It is an amenable number.

8185481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8185481 is an equidigital number, since it uses as much as digits as its factorization.

8185481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10240, while the sum is 35.

The square root of 8185481 is about 2861.0279621143. The cubic root of 8185481 is about 201.5338809716.

The spelling of 8185481 in words is "eight million, one hundred eighty-five thousand, four hundred eighty-one".