8185881 has 8 divisors (see below), whose sum is σ = 11906784. Its totient is φ = 4961120.

The previous prime is 8185873. The next prime is 8185897. The reversal of 8185881 is 1885818.

8185881 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 8185881 - 2³ = 8185873 is a prime.

It is a super-2 number, since 2×8185881² = 134017295492322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8185081) 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, 123996 + ... + 124061.

It is an arithmetic number, because the mean of its divisors is an integer number (1488348).

Almost surely, 2^8185881 is an apocalyptic number.

It is an amenable number.

8185881 is a deficient number, since it is larger than the sum of its proper divisors (3720903).

8185881 is a wasteful number, since it uses less digits than its factorization.

8185881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248071.

The product of its digits is 20480, while the sum is 39.

The square root of 8185881 is about 2861.0978662045. The cubic root of 8185881 is about 201.5371637044.

The spelling of 8185881 in words is "eight million, one hundred eighty-five thousand, eight hundred eighty-one".