4518619220 has 18 divisors (see below), whose sum is σ = 9489731706. Its totient is φ = 1807327440.

The previous prime is 4518619199. The next prime is 4518619223. The reversal of 4518619220 is 229168154.

It can be written as a sum of positive squares in only one way, i.e., 3614895376 + 903723844 = 60124^2 + 30062^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4518619223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293105 + ... + 308135.

It is an arithmetic number, because the mean of its divisors is an integer number (527207317).

Almost surely, 2^4518619220 is an apocalyptic number.

It is an amenable number.

4518619220 is an abundant number, since it is smaller than the sum of its proper divisors (4971112486).

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

4518619220 is an frugal number, since it uses more digits than its factorization.

4518619220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30071 (or 15038 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 4518619220 is about 67220.6755395987. The cubic root of 4518619220 is about 1653.2375026654.

The spelling of 4518619220 in words is "four billion, five hundred eighteen million, six hundred nineteen thousand, two hundred twenty".