18557027359 has 4 divisors (see below), whose sum is σ = 19984491016. Its totient is φ = 17129563704.

The previous prime is 18557027351. The next prime is 18557027383. The reversal of 18557027359 is 95372075581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95372075581 = 17 ⋅5610122093.

It is a cyclic number.

It is not a de Polignac number, because 18557027359 - 2³ = 18557027351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18557027351) 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, 713731809 + ... + 713731834.

It is an arithmetic number, because the mean of its divisors is an integer number (4996122754).

Almost surely, 2^18557027359 is an apocalyptic number.

18557027359 is a deficient number, since it is larger than the sum of its proper divisors (1427463657).

18557027359 is a wasteful number, since it uses less digits than its factorization.

18557027359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427463656.

The product of its (nonzero) digits is 2646000, while the sum is 52.

The spelling of 18557027359 in words is "eighteen billion, five hundred fifty-seven million, twenty-seven thousand, three hundred fifty-nine".