18026441 has 4 divisors (see below), whose sum is σ = 18051012. Its totient is φ = 18001872.

The previous prime is 18026423. The next prime is 18026453. The reversal of 18026441 is 14462081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14462081 = 181 ⋅79901.

It can be written as a sum of positive squares in 2 ways, for example, as 10214416 + 7812025 = 3196^2 + 2795^2 .

It is a cyclic number.

It is not a de Polignac number, because 18026441 - 2¹⁰ = 18025417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18026441.

It is not an unprimeable number, because it can be changed into a prime (18026461) 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, 11150 + ... + 12663.

It is an arithmetic number, because the mean of its divisors is an integer number (4512753).

Almost surely, 2^18026441 is an apocalyptic number.

It is an amenable number.

18026441 is a deficient number, since it is larger than the sum of its proper divisors (24571).

18026441 is an equidigital number, since it uses as much as digits as its factorization.

18026441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24570.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18026441 is about 4245.7556453475. The cubic root of 18026441 is about 262.2024007555.

The spelling of 18026441 in words is "eighteen million, twenty-six thousand, four hundred forty-one".