3858181 has 4 divisors (see below), whose sum is σ = 4025952. Its totient is φ = 3690412.

The previous prime is 3858163. The next prime is 3858191. The reversal of 3858181 is 1818583.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1818583 = 13 ⋅139891.

It is a cyclic number.

It is not a de Polignac number, because 3858181 - 2⁷ = 3858053 is a prime.

It is a super-2 number, since 2×3858181² = 29771121257522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3858191) 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, 83851 + ... + 83896.

It is an arithmetic number, because the mean of its divisors is an integer number (1006488).

Almost surely, 2^3858181 is an apocalyptic number.

It is an amenable number.

3858181 is a deficient number, since it is larger than the sum of its proper divisors (167771).

3858181 is a wasteful number, since it uses less digits than its factorization.

3858181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167770.

The product of its digits is 7680, while the sum is 34.

The square root of 3858181 is about 1964.2252925772. The cubic root of 3858181 is about 156.8414562440.

The spelling of 3858181 in words is "three million, eight hundred fifty-eight thousand, one hundred eighty-one".