1822361 has 4 divisors (see below), whose sum is σ = 1871652. Its totient is φ = 1773072.

The previous prime is 1822321. The next prime is 1822367. The reversal of 1822361 is 1632281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1632281 = 7 ⋅233183.

It can be written as a sum of positive squares in 2 ways, for example, as 931225 + 891136 = 965^2 + 944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1822361 - 2¹⁸ = 1560217 is a prime.

It is a super-2 number, since 2×1822361² = 6641999228642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1822367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24590 + ... + 24663.

It is an arithmetic number, because the mean of its divisors is an integer number (467913).

2^1822361 is an apocalyptic number.

It is an amenable number.

1822361 is a deficient number, since it is larger than the sum of its proper divisors (49291).

1822361 is an equidigital number, since it uses as much as digits as its factorization.

1822361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49290.

The product of its digits is 576, while the sum is 23.

The square root of 1822361 is about 1349.9485175369. The cubic root of 1822361 is about 122.1456872847.

The spelling of 1822361 in words is "one million, eight hundred twenty-two thousand, three hundred sixty-one".