2188849 has 8 divisors (see below), whose sum is σ = 2376360. Its totient is φ = 2004096.

The previous prime is 2188831. The next prime is 2188861. The reversal of 2188849 is 9488812.

It can be written as a sum of positive squares in 4 ways, for example, as 651249 + 1537600 = 807^2 + 1240^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2188849 - 2¹⁷ = 2057777 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 (2188049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167 + ... + 2395.

It is an arithmetic number, because the mean of its divisors is an integer number (297045).

2^2188849 is an apocalyptic number.

It is an amenable number.

2188849 is a deficient number, since it is larger than the sum of its proper divisors (187511).

2188849 is a wasteful number, since it uses less digits than its factorization.

2188849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379.

The product of its digits is 36864, while the sum is 40.

The square root of 2188849 is about 1479.4759207233. The cubic root of 2188849 is about 129.8390315373.

The spelling of 2188849 in words is "two million, one hundred eighty-eight thousand, eight hundred forty-nine".