1801922 has 8 divisors (see below), whose sum is σ = 2845200. Its totient is φ = 853524.

The previous prime is 1801913. The next prime is 1801927. The reversal of 1801922 is 2291081.

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

It is not an unprimeable number, because it can be changed into a prime (1801927) 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 3 ways as a sum of consecutive naturals, for example, 23672 + ... + 23747.

It is an arithmetic number, because the mean of its divisors is an integer number (355650).

2^1801922 is an apocalyptic number.

1801922 is a deficient number, since it is larger than the sum of its proper divisors (1043278).

1801922 is a wasteful number, since it uses less digits than its factorization.

1801922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47440.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1801922 is about 1342.3568825018. The cubic root of 1801922 is about 121.6873207779.

The spelling of 1801922 in words is "one million, eight hundred one thousand, nine hundred twenty-two".