1801185 has 8 divisors (see below), whose sum is σ = 2881920. Its totient is φ = 960624.

The previous prime is 1801117. The next prime is 1801187. The reversal of 1801185 is 5811081.

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

It is not a de Polignac number, because 1801185 - 2¹¹ = 1799137 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1801187) 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, 60025 + ... + 60054.

It is an arithmetic number, because the mean of its divisors is an integer number (360240).

2^1801185 is an apocalyptic number.

1801185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1801185 is a deficient number, since it is larger than the sum of its proper divisors (1080735).

1801185 is a wasteful number, since it uses less digits than its factorization.

1801185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120087.

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 1801185 is about 1342.0823372655. The cubic root of 1801185 is about 121.6707281645.

The spelling of 1801185 in words is "one million, eight hundred one thousand, one hundred eighty-five".