2180199220 has 12 divisors (see below), whose sum is σ = 4578418404. Its totient is φ = 872079680.

The previous prime is 2180199209. The next prime is 2180199227. The reversal of 2180199220 is 229910812.

It can be written as a sum of positive squares in 2 ways, for example, as 653109136 + 1527090084 = 25556^2 + 39078^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180199227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54504961 + ... + 54505000.

It is an arithmetic number, because the mean of its divisors is an integer number (381534867).

Almost surely, 2^2180199220 is an apocalyptic number.

2180199220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2180199220 is an abundant number, since it is smaller than the sum of its proper divisors (2398219184).

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

2180199220 is a wasteful number, since it uses less digits than its factorization.

2180199220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109009970 (or 109009968 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 2180199220 is about 46692.6034827787. The cubic root of 2180199220 is about 1296.6777536722.

The spelling of 2180199220 in words is "two billion, one hundred eighty million, one hundred ninety-nine thousand, two hundred twenty".