8500266018 has 48 divisors (see below), whose sum is σ = 19415167200. Its totient is φ = 2680335360.

The previous prime is 8500266011. The next prime is 8500266029. The reversal of 8500266018 is 8106620058.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8500266011) by changing a digit.

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, 218338 + ... + 254306.

It is an arithmetic number, because the mean of its divisors is an integer number (404482650).

Almost surely, 2^8500266018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8500266018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9707583600).

8500266018 is an abundant number, since it is smaller than the sum of its proper divisors (10914901182).

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

8500266018 is a wasteful number, since it uses less digits than its factorization.

8500266018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36687 (or 36684 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 8500266018 is about 92196.8872468046. The cubic root of 8500266018 is about 2040.8488408097.

The spelling of 8500266018 in words is "eight billion, five hundred million, two hundred sixty-six thousand, eighteen".