18386722055 has 8 divisors (see below), whose sum is σ = 23761302432. Its totient is φ = 13577887008.

The previous prime is 18386722027. The next prime is 18386722069. The reversal of 18386722055 is 55022768381.

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

It is a cyclic number.

It is not a de Polignac number, because 18386722055 - 2¹² = 18386717959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 141436259 + ... + 141436388.

It is an arithmetic number, because the mean of its divisors is an integer number (2970162804).

Almost surely, 2^18386722055 is an apocalyptic number.

18386722055 is a deficient number, since it is larger than the sum of its proper divisors (5374580377).

18386722055 is a wasteful number, since it uses less digits than its factorization.

18386722055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282872665.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 18386722055 in words is "eighteen billion, three hundred eighty-six million, seven hundred twenty-two thousand, fifty-five".