4086181 has 4 divisors (see below), whose sum is σ = 4457664. Its totient is φ = 3714700.

The previous prime is 4086179. The next prime is 4086217. The reversal of 4086181 is 1816804.

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 not a de Polignac number, because 4086181 - 2¹ = 4086179 is a prime.

It is a super-2 number, since 2×4086181² = 33393750329522, 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 (4086151) 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, 185725 + ... + 185746.

It is an arithmetic number, because the mean of its divisors is an integer number (1114416).

Almost surely, 2^4086181 is an apocalyptic number.

4086181 is the 1081-st centered heptagonal number.

It is an amenable number.

4086181 is a deficient number, since it is larger than the sum of its proper divisors (371483).

4086181 is a wasteful number, since it uses less digits than its factorization.

4086181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371482.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 4086181 is about 2021.4304341233. The cubic root of 4086181 is about 159.8720461386.

The spelling of 4086181 in words is "four million, eighty-six thousand, one hundred eighty-one".