18505435182 has 64 divisors (see below), whose sum is σ = 41606369280. Its totient is φ = 5448326400.

The previous prime is 18505435171. The next prime is 18505435183. The reversal of 18505435182 is 28153450581.

It is a super-2 number, since 2×18505435182² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18505435183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172207 + ... + 258197.

It is an arithmetic number, because the mean of its divisors is an integer number (650099520).

Almost surely, 2^18505435182 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18505435182, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20803184640).

18505435182 is an abundant number, since it is smaller than the sum of its proper divisors (23100934098).

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

18505435182 is a wasteful number, since it uses less digits than its factorization.

18505435182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86129.

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 18505435182 in words is "eighteen billion, five hundred five million, four hundred thirty-five thousand, one hundred eighty-two".