18306223086 has 32 divisors (see below), whose sum is σ = 37514131200. Its totient is φ = 5951862720.

The previous prime is 18306223069. The next prime is 18306223087. The reversal of 18306223086 is 68032260381.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18306223087) 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, 2066655 + ... + 2075493.

It is an arithmetic number, because the mean of its divisors is an integer number (1172316600).

Almost surely, 2^18306223086 is an apocalyptic number.

18306223086 is an abundant number, since it is smaller than the sum of its proper divisors (19207908114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18306223086 is a wasteful number, since it uses less digits than its factorization.

18306223086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17304.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 18306223086 in words is "eighteen billion, three hundred six million, two hundred twenty-three thousand, eighty-six".