1822873 has 4 divisors (see below), whose sum is σ = 1963108. Its totient is φ = 1682640.

The previous prime is 1822871. The next prime is 1822903. The reversal of 1822873 is 3782281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3782281 = 23 ⋅164447.

It can be written as a sum of positive squares in 2 ways, for example, as 363609 + 1459264 = 603^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1822873 - 2¹ = 1822871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1822871) by changing a digit.

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, 70098 + ... + 70123.

It is an arithmetic number, because the mean of its divisors is an integer number (490777).

2^1822873 is an apocalyptic number.

1822873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1822873 is a deficient number, since it is larger than the sum of its proper divisors (140235).

1822873 is a wasteful number, since it uses less digits than its factorization.

1822873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140234.

The product of its digits is 5376, while the sum is 31.

The square root of 1822873 is about 1350.1381410804. The cubic root of 1822873 is about 122.1571253287.

The spelling of 1822873 in words is "one million, eight hundred twenty-two thousand, eight hundred seventy-three".