1868233 has 4 divisors (see below), whose sum is σ = 1871748. Its totient is φ = 1864720.

The previous prime is 1868231. The next prime is 1868239. The reversal of 1868233 is 3328681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3328681 = 47 ⋅70823.

It can be written as a sum of positive squares in 2 ways, for example, as 727609 + 1140624 = 853^2 + 1068^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868233 - 2¹ = 1868231 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1868233 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1868195 and 1868204.

It is not an unprimeable number, because it can be changed into a prime (1868231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778 + ... + 2083.

It is an arithmetic number, because the mean of its divisors is an integer number (467937).

2^1868233 is an apocalyptic number.

It is an amenable number.

1868233 is a deficient number, since it is larger than the sum of its proper divisors (3515).

1868233 is an equidigital number, since it uses as much as digits as its factorization.

1868233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514.

The product of its digits is 6912, while the sum is 31.

The square root of 1868233 is about 1366.8332012356. The cubic root of 1868233 is about 123.1620794985.

The spelling of 1868233 in words is "one million, eight hundred sixty-eight thousand, two hundred thirty-three".