4609181 has 4 divisors (see below), whose sum is σ = 4614492. Its totient is φ = 4603872.

The previous prime is 4609169. The next prime is 4609207. The reversal of 4609181 is 1819064.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4368100 + 241081 = 2090^2 + 491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4609181 is a prime.

It is a super-2 number, since 2×4609181² = 42489098981522, 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 (4609081) 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, 1016 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (1153623).

Almost surely, 2^4609181 is an apocalyptic number.

It is an amenable number.

4609181 is a deficient number, since it is larger than the sum of its proper divisors (5311).

4609181 is a wasteful number, since it uses less digits than its factorization.

4609181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5310.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 4609181 is about 2146.9003237226. The cubic root of 4609181 is about 166.4209209434.

The spelling of 4609181 in words is "four million, six hundred nine thousand, one hundred eighty-one".