4220091018 has 192 divisors, whose sum is σ = 11201928192. Its totient is φ = 1130941440.

The previous prime is 4220090989. The next prime is 4220091089. The reversal of 4220091018 is 8101900224.

It is a junction number, because it is equal to n+sod(n) for n = 4220090982 and 4220091000.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6952071 + ... + 6952677.

It is an arithmetic number, because the mean of its divisors is an integer number (58343376).

Almost surely, 2^4220091018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4220091018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5600964096).

4220091018 is an abundant number, since it is smaller than the sum of its proper divisors (6981837174).

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

4220091018 is a wasteful number, since it uses less digits than its factorization.

4220091018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 4220091018 is about 64962.2276249822. The cubic root of 4220091018 is about 1615.9972074279.

The spelling of 4220091018 in words is "four billion, two hundred twenty million, ninety-one thousand, eighteen".