5649822618 has 64 divisors (see below), whose sum is σ = 12612741120. Its totient is φ = 1672819200.

The previous prime is 5649822613. The next prime is 5649822643. The reversal of 5649822618 is 8162289465.

It is a happy number.

It is a super-2 number, since 2×5649822618² = 63840991229728747848, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5649822611) 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, 500173 + ... + 511343.

It is an arithmetic number, because the mean of its divisors is an integer number (197074080).

Almost surely, 2^5649822618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5649822618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6306370560).

5649822618 is an abundant number, since it is smaller than the sum of its proper divisors (6962918502).

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

5649822618 is a wasteful number, since it uses less digits than its factorization.

5649822618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11363.

The product of its digits is 1658880, while the sum is 51.

The square root of 5649822618 is about 75165.3019550910. The cubic root of 5649822618 is about 1781.0588551259.

The spelling of 5649822618 in words is "five billion, six hundred forty-nine million, eight hundred twenty-two thousand, six hundred eighteen".