3123889866 has 24 divisors (see below), whose sum is σ = 6821727744. Its totient is φ = 1033096680.

The previous prime is 3123889819. The next prime is 3123889897. The reversal of 3123889866 is 6689883213.

It is a happy number.

3123889866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 680980 + ... + 685551.

It is an arithmetic number, because the mean of its divisors is an integer number (284238656).

Almost surely, 2^3123889866 is an apocalyptic number.

3123889866 is an abundant number, since it is smaller than the sum of its proper divisors (3697837878).

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

3123889866 is a wasteful number, since it uses less digits than its factorization.

3123889866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366666 (or 1366663 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 3123889866 is about 55891.7692151537. The cubic root of 3123889866 is about 1461.8357258551.

It can be divided in two parts, 31238 and 89866, that added together give a square (121104 = 348²).

The spelling of 3123889866 in words is "three billion, one hundred twenty-three million, eight hundred eighty-nine thousand, eight hundred sixty-six".