5811618 has 16 divisors (see below), whose sum is σ = 11820960. Its totient is φ = 1904256.

The previous prime is 5811607. The next prime is 5811643. The reversal of 5811618 is 8161185.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7855 + ... + 8562.

It is an arithmetic number, because the mean of its divisors is an integer number (738810).

Almost surely, 2^5811618 is an apocalyptic number.

5811618 is an abundant number, since it is smaller than the sum of its proper divisors (6009342).

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

5811618 is a wasteful number, since it uses less digits than its factorization.

5811618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16481.

The product of its digits is 1920, while the sum is 30.

The square root of 5811618 is about 2410.7297650297. The cubic root of 5811618 is about 179.7900638862.

The spelling of 5811618 in words is "five million, eight hundred eleven thousand, six hundred eighteen".