18263026844 has 24 divisors (see below), whose sum is σ = 32383782480. Its totient is φ = 9010779264.

The previous prime is 18263026829. The next prime is 18263026867. The reversal of 18263026844 is 44862036281.

It is a junction number, because it is equal to n+sod(n) for n = 18263026795 and 18263026804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250952 + ... + 315440.

It is an arithmetic number, because the mean of its divisors is an integer number (1349324270).

Almost surely, 2^18263026844 is an apocalyptic number.

It is an amenable number.

18263026844 is a deficient number, since it is larger than the sum of its proper divisors (14120755636).

18263026844 is a wasteful number, since it uses less digits than its factorization.

18263026844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65429 (or 65427 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 18263026844 in words is "eighteen billion, two hundred sixty-three million, twenty-six thousand, eight hundred forty-four".