3888771666 has 16 divisors (see below), whose sum is σ = 8375816064. Its totient is φ = 1196545104.

The previous prime is 3888771659. The next prime is 3888771671. The reversal of 3888771666 is 6661778883.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24927946 + ... + 24928101.

It is an arithmetic number, because the mean of its divisors is an integer number (523488504).

Almost surely, 2^3888771666 is an apocalyptic number.

3888771666 is an abundant number, since it is smaller than the sum of its proper divisors (4487044398).

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

3888771666 is a wasteful number, since it uses less digits than its factorization.

3888771666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49856065.

The product of its digits is 16257024, while the sum is 60.

The square root of 3888771666 is about 62360.0165651036. The cubic root of 3888771666 is about 1572.5488593263.

The spelling of 3888771666 in words is "three billion, eight hundred eighty-eight million, seven hundred seventy-one thousand, six hundred sixty-six".