3718181 has 2 divisors, whose sum is σ = 3718182. Its totient is φ = 3718180.

The previous prime is 3718159. The next prime is 3718207. The reversal of 3718181 is 1818173.

3718181 is digitally balanced in base 2, 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., 3094081 + 624100 = 1759^2 + 790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3718181 is a prime.

It is a super-2 number, since 2×3718181² = 27649739897522, 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 (3718381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1859090 + 1859091.

It is an arithmetic number, because the mean of its divisors is an integer number (1859091).

Almost surely, 2^3718181 is an apocalyptic number.

It is an amenable number.

3718181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3718181 is an equidigital number, since it uses as much as digits as its factorization.

3718181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 29.

The square root of 3718181 is about 1928.2585407564. The cubic root of 3718181 is about 154.9209586596.

The spelling of 3718181 in words is "three million, seven hundred eighteen thousand, one hundred eighty-one".