1801122 has 8 divisors (see below), whose sum is σ = 3602256. Its totient is φ = 600372.

The previous prime is 1801117. The next prime is 1801187. The reversal of 1801122 is 2211081.

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

1801122 is an admirable number.

It is an Ulam number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 150088 + ... + 150099.

It is an arithmetic number, because the mean of its divisors is an integer number (450282).

2^1801122 is an apocalyptic number.

1801122 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.

1801122 is a wasteful number, since it uses less digits than its factorization.

1801122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300192.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1801122 is about 1342.0588660711. The cubic root of 1801122 is about 121.6693095900.

The spelling of 1801122 in words is "one million, eight hundred one thousand, one hundred twenty-two".