3318185081 has 2 divisors, whose sum is σ = 3318185082. Its totient is φ = 3318185080.

The previous prime is 3318185077. The next prime is 3318185093. The reversal of 3318185081 is 1805818133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1869697600 + 1448487481 = 43240^2 + 38059^2 .

It is a cyclic number.

It is not a de Polignac number, because 3318185081 - 2² = 3318185077 is a prime.

It is a super-2 number, since 2×3318185081² = 22020704463541953122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3318185041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1659092540 + 1659092541.

It is an arithmetic number, because the mean of its divisors is an integer number (1659092541).

Almost surely, 2^3318185081 is an apocalyptic number.

It is an amenable number.

3318185081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3318185081 is an equidigital number, since it uses as much as digits as its factorization.

3318185081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 3318185081 is about 57603.6898210523. The cubic root of 3318185081 is about 1491.5352973551.

The spelling of 3318185081 in words is "three billion, three hundred eighteen million, one hundred eighty-five thousand, eighty-one".