3128851912 has 16 divisors (see below), whose sum is σ = 5876271360. Its totient is φ = 1561846224.

The previous prime is 3128851907. The next prime is 3128851931. The reversal of 3128851912 is 2191588213.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317308 + ... + 327019.

It is an arithmetic number, because the mean of its divisors is an integer number (367266960).

Almost surely, 2^3128851912 is an apocalyptic number.

It is an amenable number.

3128851912 is a deficient number, since it is larger than the sum of its proper divisors (2747419448).

3128851912 is a wasteful number, since it uses less digits than its factorization.

3128851912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644940 (or 644936 counting only the distinct ones).

The product of its digits is 34560, while the sum is 40.

The square root of 3128851912 is about 55936.1413756795. The cubic root of 3128851912 is about 1462.6093189475.

The spelling of 3128851912 in words is "three billion, one hundred twenty-eight million, eight hundred fifty-one thousand, nine hundred twelve".