8218143652 has 24 divisors (see below), whose sum is σ = 14480252640. Its totient is φ = 4081017600.

The previous prime is 8218143649. The next prime is 8218143673. The reversal of 8218143652 is 2563418128.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369652 + ... + 391252.

It is an arithmetic number, because the mean of its divisors is an integer number (603343860).

Almost surely, 2^8218143652 is an apocalyptic number.

It is an amenable number.

8218143652 is a deficient number, since it is larger than the sum of its proper divisors (6262108988).

8218143652 is a wasteful number, since it uses less digits than its factorization.

8218143652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22251 (or 22249 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 8218143652 is about 90653.9775851010. The cubic root of 8218143652 is about 2018.0158646902.

The spelling of 8218143652 in words is "eight billion, two hundred eighteen million, one hundred forty-three thousand, six hundred fifty-two".