8143889500 has 48 divisors (see below), whose sum is σ = 17814206592. Its totient is φ = 3252436800.

The previous prime is 8143889483. The next prime is 8143889521. The reversal of 8143889500 is 59883418.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314029 + ... + 338971.

It is an arithmetic number, because the mean of its divisors is an integer number (371129304).

Almost surely, 2^8143889500 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 8143889500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8907103296).

8143889500 is an abundant number, since it is smaller than the sum of its proper divisors (9670317092).

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

8143889500 is a wasteful number, since it uses less digits than its factorization.

8143889500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25615 (or 25603 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 8143889500 is about 90243.5011510524. The cubic root of 8143889500 is about 2011.9196119666.

The spelling of 8143889500 in words is "eight billion, one hundred forty-three million, eight hundred eighty-nine thousand, five hundred".