2221823893 has 4 divisors (see below), whose sum is σ = 2298438540. Its totient is φ = 2145209248.

The previous prime is 2221823867. The next prime is 2221823899. The reversal of 2221823893 is 3983281222.

2221823893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 522488164 + 1699335729 = 22858^2 + 41223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221823893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221823899) 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, 38307280 + ... + 38307337.

It is an arithmetic number, because the mean of its divisors is an integer number (574609635).

Almost surely, 2^2221823893 is an apocalyptic number.

It is an amenable number.

2221823893 is a deficient number, since it is larger than the sum of its proper divisors (76614647).

2221823893 is an equidigital number, since it uses as much as digits as its factorization.

2221823893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76614646.

The product of its digits is 82944, while the sum is 40.

The square root of 2221823893 is about 47136.2269703463. The cubic root of 2221823893 is about 1304.8779054213.

The spelling of 2221823893 in words is "two billion, two hundred twenty-one million, eight hundred twenty-three thousand, eight hundred ninety-three".