18181820182 has 8 divisors (see below), whose sum is σ = 27296890200. Its totient is φ = 9082856784.

The previous prime is 18181820159. The next prime is 18181820201. The reversal of 18181820182 is 28102818181.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4023832 + ... + 4028347.

It is an arithmetic number, because the mean of its divisors is an integer number (3412111275).

Almost surely, 2^18181820182 is an apocalyptic number.

18181820182 is a deficient number, since it is larger than the sum of its proper divisors (9115070018).

18181820182 is a wasteful number, since it uses less digits than its factorization.

18181820182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053310.

The product of its (nonzero) digits is 16384, while the sum is 40.

The spelling of 18181820182 in words is "eighteen billion, one hundred eighty-one million, eight hundred twenty thousand, one hundred eighty-two".