18353565359 has 16 divisors (see below), whose sum is σ = 19031889600. Its totient is φ = 17685550080.

The previous prime is 18353565353. The next prime is 18353565367. The reversal of 18353565359 is 95356535381.

It is not a de Polignac number, because 18353565359 - 2¹⁶ = 18353499823 is a prime.

It is a super-2 number, since 2×18353565359² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18353565359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18353565353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1941374 + ... + 1950804.

It is an arithmetic number, because the mean of its divisors is an integer number (1189493100).

Almost surely, 2^18353565359 is an apocalyptic number.

18353565359 is a deficient number, since it is larger than the sum of its proper divisors (678324241).

18353565359 is a wasteful number, since it uses less digits than its factorization.

18353565359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9970.

The product of its digits is 7290000, while the sum is 53.

The spelling of 18353565359 in words is "eighteen billion, three hundred fifty-three million, five hundred sixty-five thousand, three hundred fifty-nine".