1836213 has 4 divisors (see below), whose sum is σ = 2448288. Its totient is φ = 1224140.

The previous prime is 1836157. The next prime is 1836239. The reversal of 1836213 is 3126381.

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.

It is a cyclic number.

It is not a de Polignac number, because 1836213 - 2⁸ = 1835957 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1836413) 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, 306033 + ... + 306038.

It is an arithmetic number, because the mean of its divisors is an integer number (612072).

2^1836213 is an apocalyptic number.

It is an amenable number.

1836213 is a deficient number, since it is larger than the sum of its proper divisors (612075).

1836213 is an equidigital number, since it uses as much as digits as its factorization.

1836213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612074.

The product of its digits is 864, while the sum is 24.

The square root of 1836213 is about 1355.0693709180. The cubic root of 1836213 is about 122.4543881279.

The spelling of 1836213 in words is "one million, eight hundred thirty-six thousand, two hundred thirteen".