1801105 has 8 divisors (see below), whose sum is σ = 2275200. Its totient is φ = 1364976.

The previous prime is 1801091. The next prime is 1801109. The reversal of 1801105 is 5011081.

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 1801105 - 2⁵ = 1801073 is a prime.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (1801109) 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, 9385 + ... + 9574.

It is an arithmetic number, because the mean of its divisors is an integer number (284400).

2^1801105 is an apocalyptic number.

It is an amenable number.

1801105 is a deficient number, since it is larger than the sum of its proper divisors (474095).

1801105 is a wasteful number, since it uses less digits than its factorization.

1801105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18983.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1801105 is about 1342.0525325039. The cubic root of 1801105 is about 121.6689267944.

Adding to 1801105 its reverse (5011081), we get a palindrome (6812186).

The spelling of 1801105 in words is "one million, eight hundred one thousand, one hundred five".