18444260026 has 4 divisors (see below), whose sum is σ = 27666390042. Its totient is φ = 9222130012.

The previous prime is 18444260017. The next prime is 18444260039. The reversal of 18444260026 is 62006244481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62006244481 = 2789 ⋅22232429.

It can be written as a sum of positive squares in only one way, i.e., 17086411225 + 1357848801 = 130715^2 + 36849^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4611065005 + ... + 4611065008.

Almost surely, 2^18444260026 is an apocalyptic number.

18444260026 is a deficient number, since it is larger than the sum of its proper divisors (9222130016).

18444260026 is an equidigital number, since it uses as much as digits as its factorization.

18444260026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9222130015.

The product of its (nonzero) digits is 73728, while the sum is 37.

The spelling of 18444260026 in words is "eighteen billion, four hundred forty-four million, two hundred sixty thousand, twenty-six".