2163187 has 4 divisors (see below), whose sum is σ = 2329600. Its totient is φ = 1996776.

The previous prime is 2163181. The next prime is 2163193. The reversal of 2163187 is 7813612.

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

It is an interprime number because it is at equal distance from previous prime (2163181) and next prime (2163193).

It is a cyclic number.

It is not a de Polignac number, because 2163187 - 2⁷ = 2163059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163181) 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, 83187 + ... + 83212.

It is an arithmetic number, because the mean of its divisors is an integer number (582400).

2^2163187 is an apocalyptic number.

2163187 is a deficient number, since it is larger than the sum of its proper divisors (166413).

2163187 is a wasteful number, since it uses less digits than its factorization.

2163187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166412.

The product of its digits is 2016, while the sum is 28.

The square root of 2163187 is about 1470.7776854440. Note that the first 3 decimals coincide. The cubic root of 2163187 is about 129.3296259314.

Adding to 2163187 its reverse (7813612), we get a palindrome (9976799).

It can be divided in two parts, 216 and 3187, that added together give a triangular number (3403 = T₈₂).

The spelling of 2163187 in words is "two million, one hundred sixty-three thousand, one hundred eighty-seven".