3975581928 has 96 divisors (see below), whose sum is σ = 10339954560. Its totient is φ = 1273735680.

The previous prime is 3975581917. The next prime is 3975581959. The reversal of 3975581928 is 8291855793.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8699076 + ... + 8699532.

It is an arithmetic number, because the mean of its divisors is an integer number (107707860).

Almost surely, 2^3975581928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3975581928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5169977280).

3975581928 is an abundant number, since it is smaller than the sum of its proper divisors (6364372632).

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

3975581928 is a wasteful number, since it uses less digits than its factorization.

3975581928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955 (or 922 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 57.

The square root of 3975581928 is about 63052.2158849314. The cubic root of 3975581928 is about 1584.1643507410.

It can be divided in two parts, 3975 and 581928, that added together give a triangular number (585903 = T₁₀₈₂).

The spelling of 3975581928 in words is "three billion, nine hundred seventy-five million, five hundred eighty-one thousand, nine hundred twenty-eight".