4389218500 has 72 divisors (see below), whose sum is σ = 10117552536. Its totient is φ = 1663214400.

The previous prime is 4389218489. The next prime is 4389218521. The reversal of 4389218500 is 58129834.

It can be written as a sum of positive squares in 4 ways, for example, as 62473216 + 4326745284 = 7904^2 + 65778^2 .

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 168342 + ... + 192658.

It is an arithmetic number, because the mean of its divisors is an integer number (140521563).

Almost surely, 2^4389218500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4389218500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5058776268).

4389218500 is an abundant number, since it is smaller than the sum of its proper divisors (5728334036).

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

4389218500 is a wasteful number, since it uses less digits than its factorization.

4389218500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24374 (or 24343 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 4389218500 is about 66251.1773480291. The cubic root of 4389218500 is about 1637.3030355716.

The spelling of 4389218500 in words is "four billion, three hundred eighty-nine million, two hundred eighteen thousand, five hundred".