1808085 has 8 divisors (see below), whose sum is σ = 2892960. Its totient is φ = 964304.

The previous prime is 1808083. The next prime is 1808089. The reversal of 1808085 is 5808081.

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 1808085 - 2¹ = 1808083 is a prime.

1808085 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808083) 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, 60255 + ... + 60284.

It is an arithmetic number, because the mean of its divisors is an integer number (361620).

2^1808085 is an apocalyptic number.

1808085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1808085 is a deficient number, since it is larger than the sum of its proper divisors (1084875).

1808085 is a wasteful number, since it uses less digits than its factorization.

1808085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120547.

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 1808085 is about 1344.6505122150. The cubic root of 1808085 is about 121.8258960633.

The spelling of 1808085 in words is "one million, eight hundred eight thousand, eighty-five".