3881684871 has 24 divisors (see below), whose sum is σ = 5885867520. Its totient is φ = 2461856400.

The previous prime is 3881684867. The next prime is 3881684929. The reversal of 3881684871 is 1784861883.

It is a happy number.

It is not a de Polignac number, because 3881684871 - 2² = 3881684867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881684071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101445 + ... + 134366.

It is an arithmetic number, because the mean of its divisors is an integer number (245244480).

Almost surely, 2^3881684871 is an apocalyptic number.

3881684871 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3881684871 is a deficient number, since it is larger than the sum of its proper divisors (2004182649).

3881684871 is a wasteful number, since it uses less digits than its factorization.

3881684871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235907 (or 235904 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

The square root of 3881684871 is about 62303.1690285494. The cubic root of 3881684871 is about 1571.5930212600.

The spelling of 3881684871 in words is "three billion, eight hundred eighty-one million, six hundred eighty-four thousand, eight hundred seventy-one".