1804573 has 4 divisors (see below), whose sum is σ = 1815808. Its totient is φ = 1793340.

The previous prime is 1804559. The next prime is 1804577. The reversal of 1804573 is 3754081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3754081 = 311 ⋅12071.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1804573 is a prime.

It is a Duffinian number.

1804573 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804577) 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, 5373 + ... + 5698.

It is an arithmetic number, because the mean of its divisors is an integer number (453952).

2^1804573 is an apocalyptic number.

It is an amenable number.

1804573 is a deficient number, since it is larger than the sum of its proper divisors (11235).

1804573 is a wasteful number, since it uses less digits than its factorization.

1804573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11234.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1804573 is about 1343.3439619100. The cubic root of 1804573 is about 121.7469672769.

It can be divided in two parts, 180 and 4573, that added together give a triangular number (4753 = T₉₇).

The spelling of 1804573 in words is "one million, eight hundred four thousand, five hundred seventy-three".