3654181 has 2 divisors, whose sum is σ = 3654182. Its totient is φ = 3654180.

The previous prime is 3654179. The next prime is 3654193. The reversal of 3654181 is 1814563.

3654181 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., 3481956 + 172225 = 1866^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 3654181 - 2¹ = 3654179 is a prime.

It is a super-2 number, since 2×3654181² = 26706077561522, which contains 22 as substring.

Together with 3654179, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3654151) 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, 1827090 + 1827091.

It is an arithmetic number, because the mean of its divisors is an integer number (1827091).

Almost surely, 2^3654181 is an apocalyptic number.

It is an amenable number.

3654181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3654181 is an equidigital number, since it uses as much as digits as its factorization.

3654181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 3654181 is about 1911.5912219928. The cubic root of 3654181 is about 154.0269391227.

The spelling of 3654181 in words is "three million, six hundred fifty-four thousand, one hundred eighty-one".