18345814066 has 8 divisors (see below), whose sum is σ = 27519783984. Its totient is φ = 9172552740.

The previous prime is 18345814063. The next prime is 18345814087. The reversal of 18345814066 is 66041854381.

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

It is not an unprimeable number, because it can be changed into a prime (18345814063) 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 3 ways as a sum of consecutive naturals, for example, 106840 + ... + 219331.

It is an arithmetic number, because the mean of its divisors is an integer number (3439972998).

Almost surely, 2^18345814066 is an apocalyptic number.

18345814066 is a deficient number, since it is larger than the sum of its proper divisors (9173969918).

18345814066 is a wasteful number, since it uses less digits than its factorization.

18345814066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354296.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 18345814066 in words is "eighteen billion, three hundred forty-five million, eight hundred fourteen thousand, sixty-six".