18122326441 has 4 divisors (see below), whose sum is σ = 18129952852. Its totient is φ = 18114700032.

The previous prime is 18122326351. The next prime is 18122326447. The reversal of 18122326441 is 14462322181.

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 4914570816 + 13207755625 = 70104^2 + 114925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18122326441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18122326397 and 18122326406.

It is not an unprimeable number, because it can be changed into a prime (18122326447) 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, 3809640 + ... + 3814393.

It is an arithmetic number, because the mean of its divisors is an integer number (4532488213).

Almost surely, 2^18122326441 is an apocalyptic number.

It is an amenable number.

18122326441 is a deficient number, since it is larger than the sum of its proper divisors (7626411).

18122326441 is an equidigital number, since it uses as much as digits as its factorization.

18122326441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7626410.

The product of its digits is 18432, while the sum is 34.

The spelling of 18122326441 in words is "eighteen billion, one hundred twenty-two million, three hundred twenty-six thousand, four hundred forty-one".