1856233 has 2 divisors, whose sum is σ = 1856234. Its totient is φ = 1856232.

The previous prime is 1856227. The next prime is 1856237. The reversal of 1856233 is 3326581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1411344 + 444889 = 1188^2 + 667^2 .

It is an emirp because it is prime and its reverse (3326581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1856233 - 2⁵ = 1856201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1856237) 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 as a sum of consecutive naturals, namely, 928116 + 928117.

It is an arithmetic number, because the mean of its divisors is an integer number (928117).

2^1856233 is an apocalyptic number.

It is an amenable number.

1856233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1856233 is an equidigital number, since it uses as much as digits as its factorization.

1856233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 1856233 is about 1362.4364205349. The cubic root of 1856233 is about 122.8978154115.

The spelling of 1856233 in words is "one million, eight hundred fifty-six thousand, two hundred thirty-three".