18182818182 has 32 divisors (see below), whose sum is σ = 38099026944. Its totient is φ = 5777877600.

The previous prime is 18182818177. The next prime is 18182818183. The reversal of 18182818182 is 28181828181.

It is a super-2 number, since 2×18182818182² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18182818183) 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, 717069 + ... + 741992.

It is an arithmetic number, because the mean of its divisors is an integer number (1190594592).

Almost surely, 2^18182818182 is an apocalyptic number.

18182818182 is an abundant number, since it is smaller than the sum of its proper divisors (19916208762).

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

18182818182 is a wasteful number, since it uses less digits than its factorization.

18182818182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459164.

The product of its digits is 131072, while the sum is 48.

Subtracting 18182818182 from its reverse (28181828181), we obtain a palindrome (9999009999).

The spelling of 18182818182 in words is "eighteen billion, one hundred eighty-two million, eight hundred eighteen thousand, one hundred eighty-two".