1811012 has 12 divisors (see below), whose sum is σ = 3622080. Its totient is φ = 776136.

The previous prime is 1810999. The next prime is 1811041. The reversal of 1811012 is 2101181.

1811012 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32312 + ... + 32367.

It is an arithmetic number, because the mean of its divisors is an integer number (301840).

2^1811012 is an apocalyptic number.

It is an amenable number.

1811012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1811012 is a wasteful number, since it uses less digits than its factorization.

1811012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64690 (or 64688 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 1811012 is about 1345.7384589882. The cubic root of 1811012 is about 121.8915994923.

Adding to 1811012 its reverse (2101181), we get a palindrome (3912193).

The spelling of 1811012 in words is "one million, eight hundred eleven thousand, twelve".