8538618 has 32 divisors (see below), whose sum is σ = 18988992. Its totient is φ = 2537600.

The previous prime is 8538617. The next prime is 8538637. The reversal of 8538618 is 8168358.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8538611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2278 + ... + 4718.

It is an arithmetic number, because the mean of its divisors is an integer number (593406).

Almost surely, 2^8538618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8538618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9494496).

8538618 is an abundant number, since it is smaller than the sum of its proper divisors (10450374).

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

8538618 is a wasteful number, since it uses less digits than its factorization.

8538618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510.

The product of its digits is 46080, while the sum is 39.

The square root of 8538618 is about 2922.0913743413. The cubic root of 8538618 is about 204.3913575363.

The spelling of 8538618 in words is "eight million, five hundred thirty-eight thousand, six hundred eighteen".