8531438886 has 80 divisors (see below), whose sum is σ = 19817453568. Its totient is φ = 2751683400.

The previous prime is 8531438869. The next prime is 8531438911. The reversal of 8531438886 is 6888341358.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1216851 + ... + 1223841.

Almost surely, 2^8531438886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8531438886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9908726784).

8531438886 is an abundant number, since it is smaller than the sum of its proper divisors (11286014682).

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

8531438886 is an frugal number, since it uses more digits than its factorization.

8531438886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7051 (or 7027 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The square root of 8531438886 is about 92365.7885041859. The cubic root of 8531438886 is about 2043.3405863511.

The spelling of 8531438886 in words is "eight billion, five hundred thirty-one million, four hundred thirty-eight thousand, eight hundred eighty-six".