2189263823 has 2 divisors, whose sum is σ = 2189263824. Its totient is φ = 2189263822.

The previous prime is 2189263819. The next prime is 2189263829. The reversal of 2189263823 is 3283629812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2189263823 - 2² = 2189263819 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2189263829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094631911 + 1094631912.

It is an arithmetic number, because the mean of its divisors is an integer number (1094631912).

Almost surely, 2^2189263823 is an apocalyptic number.

2189263823 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189263823 is an equidigital number, since it uses as much as digits as its factorization.

2189263823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 44.

The square root of 2189263823 is about 46789.5695962252. The cubic root of 2189263823 is about 1298.4723323211.

The spelling of 2189263823 in words is "two billion, one hundred eighty-nine million, two hundred sixty-three thousand, eight hundred twenty-three".