18809580559 has 18 divisors (see below), whose sum is σ = 24050510232. Its totient is φ = 14656811400.

The previous prime is 18809580557. The next prime is 18809580593. The reversal of 18809580559 is 95508590881.

It is not a de Polignac number, because 18809580559 - 2¹ = 18809580557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18809580557) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1580307 + ... + 1592164.

Almost surely, 2^18809580559 is an apocalyptic number.

18809580559 is a deficient number, since it is larger than the sum of its proper divisors (5240929673).

18809580559 is a wasteful number, since it uses less digits than its factorization.

18809580559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172507 (or 3172489 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 58.

The spelling of 18809580559 in words is "eighteen billion, eight hundred nine million, five hundred eighty thousand, five hundred fifty-nine".