18265535268 has 12 divisors (see below), whose sum is σ = 42619582320. Its totient is φ = 6088511752.

The previous prime is 18265535257. The next prime is 18265535269. The reversal of 18265535268 is 86253556281.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 18265535268.

It is not an unprimeable number, because it can be changed into a prime (18265535269) 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, 761063958 + ... + 761063981.

It is an arithmetic number, because the mean of its divisors is an integer number (3551631860).

Almost surely, 2^18265535268 is an apocalyptic number.

It is an amenable number.

18265535268 is an abundant number, since it is smaller than the sum of its proper divisors (24354047052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18265535268 is a wasteful number, since it uses less digits than its factorization.

18265535268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522127946 (or 1522127944 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 51.

The spelling of 18265535268 in words is "eighteen billion, two hundred sixty-five million, five hundred thirty-five thousand, two hundred sixty-eight".