4618844640 has 192 divisors, whose sum is σ = 16198963200. Its totient is φ = 1229179392.

The previous prime is 4618844609. The next prime is 4618844647. The reversal of 4618844640 is 464488164.

4618844640 is a `hidden beast` number, since 4 + 6 + 188 + 4 + 464 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4618844647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3209041 + ... + 3210479.

It is an arithmetic number, because the mean of its divisors is an integer number (84369600).

Almost surely, 2^4618844640 is an apocalyptic number.

4618844640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4618844640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8099481600).

4618844640 is an abundant number, since it is smaller than the sum of its proper divisors (11580118560).

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

4618844640 is a wasteful number, since it uses less digits than its factorization.

4618844640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206 (or 2192 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The square root of 4618844640 is about 67962.0823695095. The cubic root of 4618844640 is about 1665.3714616382.

The spelling of 4618844640 in words is "four billion, six hundred eighteen million, eight hundred forty-four thousand, six hundred forty".