1818241105 has 4 divisors (see below), whose sum is σ = 2181889332. Its totient is φ = 1454592880.

The previous prime is 1818241097. The next prime is 1818241151. The reversal of 1818241105 is 5011428181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 992943121 + 825297984 = 31511^2 + 28728^2 .

It is not a de Polignac number, because 1818241105 - 2³ = 1818241097 is a prime.

It is a super-3 number, since 3×1818241105³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181824106 + ... + 181824115.

It is an arithmetic number, because the mean of its divisors is an integer number (545472333).

Almost surely, 2^1818241105 is an apocalyptic number.

It is an amenable number.

1818241105 is a deficient number, since it is larger than the sum of its proper divisors (363648227).

1818241105 is an equidigital number, since it uses as much as digits as its factorization.

1818241105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363648226.

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 1818241105 is about 42640.8384650208. The cubic root of 1818241105 is about 1220.5357104897.

Adding to 1818241105 its reverse (5011428181), we get a palindrome (6829669286).

The spelling of 1818241105 in words is "one billion, eight hundred eighteen million, two hundred forty-one thousand, one hundred five".