3881666562 has 8 divisors (see below), whose sum is σ = 7763333136. Its totient is φ = 1293888852.

The previous prime is 3881666539. The next prime is 3881666563. The reversal of 3881666562 is 2656661883.

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

3881666562 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3881666563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323472208 + ... + 323472219.

It is an arithmetic number, because the mean of its divisors is an integer number (970416642).

Almost surely, 2^3881666562 is an apocalyptic number.

3881666562 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3881666562 is a wasteful number, since it uses less digits than its factorization.

3881666562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646944432.

The product of its digits is 2488320, while the sum is 51.

The square root of 3881666562 is about 62303.0220936352. The cubic root of 3881666562 is about 1571.5905503105.

The spelling of 3881666562 in words is "three billion, eight hundred eighty-one million, six hundred sixty-six thousand, five hundred sixty-two".