3851881 has 8 divisors (see below), whose sum is σ = 4281984. Its totient is φ = 3435120.

The previous prime is 3851873. The next prime is 3851899. The reversal of 3851881 is 1881583.

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 3851881 - 2³ = 3851873 is a prime.

It is a super-2 number, since 2×3851881² = 29673974476322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3851801) 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, 2721 + ... + 3886.

It is an arithmetic number, because the mean of its divisors is an integer number (535248).

Almost surely, 2^3851881 is an apocalyptic number.

It is an amenable number.

3851881 is a deficient number, since it is larger than the sum of its proper divisors (430103).

3851881 is a wasteful number, since it uses less digits than its factorization.

3851881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671.

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

The square root of 3851881 is about 1962.6209516868. The cubic root of 3851881 is about 156.7560412531.

The spelling of 3851881 in words is "three million, eight hundred fifty-one thousand, eight hundred eighty-one".