18341942566 has 8 divisors (see below), whose sum is σ = 29131320600. Its totient is φ = 8631502368.

The previous prime is 18341942557. The next prime is 18341942569. The reversal of 18341942566 is 66524914381.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18341942569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269734416 + ... + 269734483.

It is an arithmetic number, because the mean of its divisors is an integer number (3641415075).

Almost surely, 2^18341942566 is an apocalyptic number.

18341942566 is a deficient number, since it is larger than the sum of its proper divisors (10789378034).

18341942566 is a wasteful number, since it uses less digits than its factorization.

18341942566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539468918.

The product of its digits is 1244160, while the sum is 49.

The spelling of 18341942566 in words is "eighteen billion, three hundred forty-one million, nine hundred forty-two thousand, five hundred sixty-six".