18220656182 has 4 divisors (see below), whose sum is σ = 27330984276. Its totient is φ = 9110328090.

The previous prime is 18220656161. The next prime is 18220656211. The reversal of 18220656182 is 28165602281.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4555164044 + ... + 4555164047.

It is an arithmetic number, because the mean of its divisors is an integer number (6832746069).

Almost surely, 2^18220656182 is an apocalyptic number.

18220656182 is a deficient number, since it is larger than the sum of its proper divisors (9110328094).

18220656182 is an equidigital number, since it uses as much as digits as its factorization.

18220656182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110328093.

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 18220656182 in words is "eighteen billion, two hundred twenty million, six hundred fifty-six thousand, one hundred eighty-two".