4223641218 has 16 divisors (see below), whose sum is σ = 8524781760. Its totient is φ = 1394963856.

The previous prime is 4223641217. The next prime is 4223641243. The reversal of 4223641218 is 8121463224.

It is not an unprimeable number, because it can be changed into a prime (4223641217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3228430 + ... + 3229737.

It is an arithmetic number, because the mean of its divisors is an integer number (532798860).

Almost surely, 2^4223641218 is an apocalyptic number.

4223641218 is an abundant number, since it is smaller than the sum of its proper divisors (4301140542).

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

4223641218 is a wasteful number, since it uses less digits than its factorization.

4223641218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6458281.

The product of its digits is 18432, while the sum is 33.

The square root of 4223641218 is about 64989.5469902661. The cubic root of 4223641218 is about 1616.4502391444.

The spelling of 4223641218 in words is "four billion, two hundred twenty-three million, six hundred forty-one thousand, two hundred eighteen".