181820918182 has 8 divisors (see below), whose sum is σ = 272741928552. Its totient is φ = 90906942000.

The previous prime is 181820918177. The next prime is 181820918183. The reversal of 181820918182 is 281819028181.

181820918182 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181820918183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1693444 + ... + 1797607.

It is an arithmetic number, because the mean of its divisors is an integer number (34092741069).

Almost surely, 2^181820918182 is an apocalyptic number.

181820918182 is a deficient number, since it is larger than the sum of its proper divisors (90921010370).

181820918182 is a wasteful number, since it uses less digits than its factorization.

181820918182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517094.

The product of its (nonzero) digits is 147456, while the sum is 49.

The spelling of 181820918182 in words is "one hundred eighty-one billion, eight hundred twenty million, nine hundred eighteen thousand, one hundred eighty-two".