18955655223 has 16 divisors (see below), whose sum is σ = 25452973920. Its totient is φ = 12548018304.

The previous prime is 18955655107. The next prime is 18955655233. The reversal of 18955655223 is 32255655981.

It is not a de Polignac number, because 18955655223 - 2¹⁶ = 18955589687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18955655233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219265 + ... + 293237.

It is an arithmetic number, because the mean of its divisors is an integer number (1590810870).

Almost surely, 2^18955655223 is an apocalyptic number.

18955655223 is a deficient number, since it is larger than the sum of its proper divisors (6497318697).

18955655223 is a wasteful number, since it uses less digits than its factorization.

18955655223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74578.

The product of its digits is 3240000, while the sum is 51.

The spelling of 18955655223 in words is "eighteen billion, nine hundred fifty-five million, six hundred fifty-five thousand, two hundred twenty-three".