2219902820 has 24 divisors (see below), whose sum is σ = 4662685944. Its totient is φ = 887791616.

The previous prime is 2219902819. The next prime is 2219902831. The reversal of 2219902820 is 282099122.

It can be written as a sum of positive squares in 4 ways, for example, as 160376896 + 2059525924 = 12664^2 + 45382^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183602 + ... + 195318.

It is an arithmetic number, because the mean of its divisors is an integer number (194278581).

Almost surely, 2^2219902820 is an apocalyptic number.

2219902820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2219902820 is an abundant number, since it is smaller than the sum of its proper divisors (2442783124).

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

2219902820 is a wasteful number, since it uses less digits than its factorization.

2219902820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21199 (or 21197 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 2219902820 is about 47115.8446809563. The cubic root of 2219902820 is about 1304.5017147087.

The spelling of 2219902820 in words is "two billion, two hundred nineteen million, nine hundred two thousand, eight hundred twenty".