2189263 has 4 divisors (see below), whose sum is σ = 2192400. Its totient is φ = 2186128.

The previous prime is 2189249. The next prime is 2189267. The reversal of 2189263 is 3629812.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2189263 - 2⁹ = 2188751 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6 + ... + 2092.

It is an arithmetic number, because the mean of its divisors is an integer number (548100).

2^2189263 is an apocalyptic number.

2189263 is a deficient number, since it is larger than the sum of its proper divisors (3137).

2189263 is a wasteful number, since it uses less digits than its factorization.

2189263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136.

The product of its digits is 5184, while the sum is 31.

The square root of 2189263 is about 1479.6158285177. The cubic root of 2189263 is about 129.8472169611.

The spelling of 2189263 in words is "two million, one hundred eighty-nine thousand, two hundred sixty-three".