1822105 has 8 divisors (see below), whose sum is σ = 2194632. Its totient is φ = 1452288.

The previous prime is 1822091. The next prime is 1822109. The reversal of 1822105 is 5012281.

It can be written as a sum of positive squares in 4 ways, for example, as 594441 + 1227664 = 771^2 + 1108^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1822105 - 2¹³ = 1813913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1822109) 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 7 ways as a sum of consecutive naturals, for example, 1377 + ... + 2353.

It is an arithmetic number, because the mean of its divisors is an integer number (274329).

2^1822105 is an apocalyptic number.

It is an amenable number.

1822105 is a deficient number, since it is larger than the sum of its proper divisors (372527).

1822105 is an equidigital number, since it uses as much as digits as its factorization.

1822105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1822105 is about 1349.8536957760. The cubic root of 1822105 is about 122.1399674593.

Adding to 1822105 its reverse (5012281), we get a palindrome (6834386).

The spelling of 1822105 in words is "one million, eight hundred twenty-two thousand, one hundred five".