1822369 has 4 divisors (see below), whose sum is σ = 1826496. Its totient is φ = 1818244.

The previous prime is 1822367. The next prime is 1822391. The reversal of 1822369 is 9632281.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9632281 = 59 ⋅163259.

It is a cyclic number.

It is not a de Polignac number, because 1822369 - 2¹ = 1822367 is a prime.

It is a super-2 number, since 2×1822369² = 6642057544322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1822369.

It is not an unprimeable number, because it can be changed into a prime (1822367) 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, 1309 + ... + 2314.

It is an arithmetic number, because the mean of its divisors is an integer number (456624).

2^1822369 is an apocalyptic number.

It is an amenable number.

1822369 is a deficient number, since it is larger than the sum of its proper divisors (4127).

1822369 is an equidigital number, since it uses as much as digits as its factorization.

1822369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126.

The product of its digits is 5184, while the sum is 31.

The square root of 1822369 is about 1349.9514806096. The cubic root of 1822369 is about 122.1458660206.

The spelling of 1822369 in words is "one million, eight hundred twenty-two thousand, three hundred sixty-nine".