18535168352 has 48 divisors (see below), whose sum is σ = 37542612240. Its totient is φ = 9001410048.

The previous prime is 18535168349. The next prime is 18535168403. The reversal of 18535168352 is 25386153581.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18535168297 and 18535168306.

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, 681674 + ... + 708342.

It is an arithmetic number, because the mean of its divisors is an integer number (782137755).

Almost surely, 2^18535168352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18535168352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18771306120).

18535168352 is an abundant number, since it is smaller than the sum of its proper divisors (19007443888).

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

18535168352 is a wasteful number, since it uses less digits than its factorization.

18535168352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27303 (or 27295 counting only the distinct ones).

The product of its digits is 864000, while the sum is 47.

The spelling of 18535168352 in words is "eighteen billion, five hundred thirty-five million, one hundred sixty-eight thousand, three hundred fifty-two".