1811122 has 8 divisors (see below), whose sum is σ = 2732400. Its totient is φ = 900324.

The previous prime is 1811119. The next prime is 1811141. The reversal of 1811122 is 2211181.

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

It is a junction number, because it is equal to n+sod(n) for n = 1811096 and 1811105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2172 + ... + 2887.

It is an arithmetic number, because the mean of its divisors is an integer number (341550).

2^1811122 is an apocalyptic number.

1811122 is a deficient number, since it is larger than the sum of its proper divisors (921278).

1811122 is a wasteful number, since it uses less digits than its factorization.

1811122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5240.

The product of its digits is 32, while the sum is 16.

The square root of 1811122 is about 1345.7793281218. The cubic root of 1811122 is about 121.8940673214.

The spelling of 1811122 in words is "one million, eight hundred eleven thousand, one hundred twenty-two".