4185881 has 8 divisors (see below), whose sum is σ = 4862784. Its totient is φ = 3528720.

The previous prime is 4185869. The next prime is 4185901. The reversal of 4185881 is 1885814.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4185881 - 2¹⁰ = 4184857 is a prime.

It is a super-2 number, since 2×4185881² = 35043199492322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4185821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4475 + ... + 5328.

It is an arithmetic number, because the mean of its divisors is an integer number (607848).

Almost surely, 2^4185881 is an apocalyptic number.

It is an amenable number.

4185881 is a deficient number, since it is larger than the sum of its proper divisors (676903).

4185881 is an equidigital number, since it uses as much as digits as its factorization.

4185881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9871.

The product of its digits is 10240, while the sum is 35.

The square root of 4185881 is about 2045.9425700640. The cubic root of 4185881 is about 161.1618679906.

The spelling of 4185881 in words is "four million, one hundred eighty-five thousand, eight hundred eighty-one".