2221931790 has 256 divisors, whose sum is σ = 7054387200. Its totient is φ = 492079104.

The previous prime is 2221931783. The next prime is 2221931797. The reversal of 2221931790 is 971391222.

It is an interprime number because it is at equal distance from previous prime (2221931783) and next prime (2221931797).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221931797) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1371601 + ... + 1373219.

It is an arithmetic number, because the mean of its divisors is an integer number (27556200).

Almost surely, 2^2221931790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221931790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3527193600).

2221931790 is an abundant number, since it is smaller than the sum of its proper divisors (4832455410).

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

2221931790 is a wasteful number, since it uses less digits than its factorization.

2221931790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1682 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 2221931790 is about 47137.3714795384. The cubic root of 2221931790 is about 1304.8990277273.

The spelling of 2221931790 in words is "two billion, two hundred twenty-one million, nine hundred thirty-one thousand, seven hundred ninety".