2188228723 has 4 divisors (see below), whose sum is σ = 2210787880. Its totient is φ = 2165669568.

The previous prime is 2188228711. The next prime is 2188228759. The reversal of 2188228723 is 3278228812.

2188228723 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 is a cyclic number.

It is not a de Polignac number, because 2188228723 - 2¹⁷ = 2188097651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2188228723.

It is not an unprimeable number, because it can be changed into a prime (2188225723) 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, 11279433 + ... + 11279626.

It is an arithmetic number, because the mean of its divisors is an integer number (552696970).

Almost surely, 2^2188228723 is an apocalyptic number.

2188228723 is a deficient number, since it is larger than the sum of its proper divisors (22559157).

2188228723 is an equidigital number, since it uses as much as digits as its factorization.

2188228723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22559156.

The product of its digits is 172032, while the sum is 43.

The square root of 2188228723 is about 46778.5070625389. The cubic root of 2188228723 is about 1298.2676576449.

It can be divided in two parts, 21882 and 28723, that added together give a palindrome (50605).

The spelling of 2188228723 in words is "two billion, one hundred eighty-eight million, two hundred twenty-eight thousand, seven hundred twenty-three".