1806245 has 8 divisors (see below), whose sum is σ = 2477184. Its totient is φ = 1238544.

The previous prime is 1806241. The next prime is 1806247. The reversal of 1806245 is 5426081.

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 1806245 - 2² = 1806241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806241) 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 7 ways as a sum of consecutive naturals, for example, 25769 + ... + 25838.

It is an arithmetic number, because the mean of its divisors is an integer number (309648).

2^1806245 is an apocalyptic number.

It is an amenable number.

1806245 is a deficient number, since it is larger than the sum of its proper divisors (670939).

1806245 is an equidigital number, since it uses as much as digits as its factorization.

1806245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51619.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1806245 is about 1343.9661454069. The cubic root of 1806245 is about 121.7845566111.

The spelling of 1806245 in words is "one million, eight hundred six thousand, two hundred forty-five".