1859223 has 4 divisors (see below), whose sum is σ = 2478968. Its totient is φ = 1239480.

The previous prime is 1859203. The next prime is 1859233. The reversal of 1859223 is 3229581.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1859223 - 2⁹ = 1858711 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1859203) 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, 309868 + ... + 309873.

It is an arithmetic number, because the mean of its divisors is an integer number (619742).

2^1859223 is an apocalyptic number.

1859223 is a deficient number, since it is larger than the sum of its proper divisors (619745).

1859223 is an equidigital number, since it uses as much as digits as its factorization.

1859223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619744.

The product of its digits is 4320, while the sum is 30.

The square root of 1859223 is about 1363.5332779217. The cubic root of 1859223 is about 122.9637675023.

The spelling of 1859223 in words is "one million, eight hundred fifty-nine thousand, two hundred twenty-three".