8472172185 has 32 divisors (see below), whose sum is σ = 15104880000. Its totient is φ = 4505519808.

The previous prime is 8472172183. The next prime is 8472172211. The reversal of 8472172185 is 5812712748.

8472172185 is a `hidden beast` number, since 8 + 472 + 172 + 1 + 8 + 5 = 666.

It is not a de Polignac number, because 8472172185 - 2¹ = 8472172183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8472172185.

It is not an unprimeable number, because it can be changed into a prime (8472172183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42795 + ... + 137024.

It is an arithmetic number, because the mean of its divisors is an integer number (472027500).

Almost surely, 2^8472172185 is an apocalyptic number.

It is an amenable number.

8472172185 is a deficient number, since it is larger than the sum of its proper divisors (6632707815).

8472172185 is a wasteful number, since it uses less digits than its factorization.

8472172185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180182 (or 180176 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 8472172185 is about 92044.4033333912. The cubic root of 8472172185 is about 2038.5979877972.

The spelling of 8472172185 in words is "eight billion, four hundred seventy-two million, one hundred seventy-two thousand, one hundred eighty-five".