3622181 has 4 divisors (see below), whose sum is σ = 3636864. Its totient is φ = 3607500.

The previous prime is 3622169. The next prime is 3622183. The reversal of 3622181 is 1812263.

3622181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3622181 - 2¹⁰ = 3621157 is a prime.

It is a super-2 number, since 2×3622181² = 26240390393522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3622183) 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 in 3 ways as a sum of consecutive naturals, for example, 6965 + ... + 7466.

It is an arithmetic number, because the mean of its divisors is an integer number (909216).

Almost surely, 2^3622181 is an apocalyptic number.

It is an amenable number.

3622181 is a deficient number, since it is larger than the sum of its proper divisors (14683).

3622181 is a wasteful number, since it uses less digits than its factorization.

3622181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14682.

The product of its digits is 576, while the sum is 23.

The square root of 3622181 is about 1903.2028268159. The cubic root of 3622181 is about 153.5760109066.

The spelling of 3622181 in words is "three million, six hundred twenty-two thousand, one hundred eighty-one".