4536181 has 4 divisors (see below), whose sum is σ = 4885132. Its totient is φ = 4187232.

The previous prime is 4536179. The next prime is 4536283. The reversal of 4536181 is 1816354.

It is the 870-th star number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2149156 + 2387025 = 1466^2 + 1545^2 .

It is a cyclic number.

It is not a de Polignac number, because 4536181 - 2¹ = 4536179 is a prime.

It is a super-2 number, since 2×4536181² = 41153876129522, 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 (4536121) 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 in 3 ways as a sum of consecutive naturals, for example, 174456 + ... + 174481.

It is an arithmetic number, because the mean of its divisors is an integer number (1221283).

Almost surely, 2^4536181 is an apocalyptic number.

It is an amenable number.

4536181 is a deficient number, since it is larger than the sum of its proper divisors (348951).

4536181 is a wasteful number, since it uses less digits than its factorization.

4536181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348950.

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

The square root of 4536181 is about 2129.8312139698. The cubic root of 4536181 is about 165.5376523405.

The spelling of 4536181 in words is "four million, five hundred thirty-six thousand, one hundred eighty-one".