19958202220 has 72 divisors (see below), whose sum is σ = 47192673024. Its totient is φ = 7080480000.

The previous prime is 19958202217. The next prime is 19958202221. The reversal of 19958202220 is 2220285991.

It is not an unprimeable number, because it can be changed into a prime (19958202221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1356 + ... + 199795.

It is an arithmetic number, because the mean of its divisors is an integer number (655453792).

Almost surely, 2^19958202220 is an apocalyptic number.

19958202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19958202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23596336512).

19958202220 is an abundant number, since it is smaller than the sum of its proper divisors (27234470804).

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

19958202220 is a wasteful number, since it uses less digits than its factorization.

19958202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201223 (or 201210 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 19958202220 in words is "nineteen billion, nine hundred fifty-eight million, two hundred two thousand, two hundred twenty".