18843006222018 has 128 divisors (see below), whose sum is σ = 47259702201600. Its totient is φ = 5512578624000.

The previous prime is 18843006222017. The next prime is 18843006222023. The reversal of 18843006222018 is 81022260034881.

18843006222018 is a `hidden beast` number, since 1 + 8 + 8 + 4 + 3 + 0 + 0 + 622 + 2 + 0 + 18 = 666.

It is not an unprimeable number, because it can be changed into a prime (18843006222011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 203237680 + ... + 203330372.

It is an arithmetic number, because the mean of its divisors is an integer number (369216423450).

Almost surely, 2^{18843006222018} is an apocalyptic number.

18843006222018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18843006222018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23629851100800).

18843006222018 is an abundant number, since it is smaller than the sum of its proper divisors (28416695979582).

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

18843006222018 is a wasteful number, since it uses less digits than its factorization.

18843006222018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104545 (or 104539 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

Adding to 18843006222018 its reverse (81022260034881), we get a palindrome (99865266256899).

The spelling of 18843006222018 in words is "eighteen trillion, eight hundred forty-three billion, six million, two hundred twenty-two thousand, eighteen".