8538171816 has 64 divisors (see below), whose sum is σ = 22687142400. Its totient is φ = 2670072768.

The previous prime is 8538171791. The next prime is 8538171839. The reversal of 8538171816 is 6181718358.

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, 43926 + ... + 137861.

It is an arithmetic number, because the mean of its divisors is an integer number (354486600).

Almost surely, 2^8538171816 is an apocalyptic number.

It is an amenable number.

8538171816 is an abundant number, since it is smaller than the sum of its proper divisors (14148970584).

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

8538171816 is a wasteful number, since it uses less digits than its factorization.

8538171816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181918 (or 181914 counting only the distinct ones).

The product of its digits is 322560, while the sum is 48.

The square root of 8538171816 is about 92402.2284146871. The cubic root of 8538171816 is about 2043.8779732938.

The spelling of 8538171816 in words is "eight billion, five hundred thirty-eight million, one hundred seventy-one thousand, eight hundred sixteen".