9165225618 has 12 divisors (see below), whose sum is σ = 19857988878. Its totient is φ = 3055075200.

The previous prime is 9165225611. The next prime is 9165225673. The reversal of 9165225618 is 8165225619.

9165225618 is a `hidden beast` number, since 9 + 1 + 6 + 5 + 2 + 25 + 618 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5301732969 + 3863492649 = 72813^2 + 62157^2 .

It is not an unprimeable number, because it can be changed into a prime (9165225611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254589583 + ... + 254589618.

Almost surely, 2^9165225618 is an apocalyptic number.

9165225618 is an abundant number, since it is smaller than the sum of its proper divisors (10692763260).

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

9165225618 is a wasteful number, since it uses less digits than its factorization.

9165225618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509179209 (or 509179206 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 9165225618 is about 95735.1848486229. The cubic root of 9165225618 is about 2092.7357181902.

Subtracting from 9165225618 its reverse (8165225619), we obtain a palindrome (999999999).

The spelling of 9165225618 in words is "nine billion, one hundred sixty-five million, two hundred twenty-five thousand, six hundred eighteen".