3158443872 has 216 divisors, whose sum is σ = 10042663176. Its totient is φ = 938207232.

The previous prime is 3158443867. The next prime is 3158443907. The reversal of 3158443872 is 2783448513.

3158443872 is a `hidden beast` number, since 31 + 584 + 4 + 38 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1766563 + ... + 1768349.

It is an arithmetic number, because the mean of its divisors is an integer number (46493811).

Almost surely, 2^3158443872 is an apocalyptic number.

3158443872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3158443872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5021331588).

3158443872 is an abundant number, since it is smaller than the sum of its proper divisors (6884219304).

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

3158443872 is a wasteful number, since it uses less digits than its factorization.

3158443872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1828 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 3158443872 is about 56200.0344483880. The cubic root of 3158443872 is about 1467.2058654752.

The spelling of 3158443872 in words is "three billion, one hundred fifty-eight million, four hundred forty-three thousand, eight hundred seventy-two".