1822823 has 2 divisors, whose sum is σ = 1822824. Its totient is φ = 1822822.

The previous prime is 1822811. The next prime is 1822837. The reversal of 1822823 is 3282281.

It is a weak prime.

It is an emirp because it is prime and its reverse (3282281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1822823 - 2¹² = 1818727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1822792 and 1822801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1822123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911411 + 911412.

It is an arithmetic number, because the mean of its divisors is an integer number (911412).

2^1822823 is an apocalyptic number.

1822823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1822823 is an equidigital number, since it uses as much as digits as its factorization.

1822823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 26.

The square root of 1822823 is about 1350.1196243296. The cubic root of 1822823 is about 122.1560084266.

The spelling of 1822823 in words is "one million, eight hundred twenty-two thousand, eight hundred twenty-three".