18504818205 has 16 divisors (see below), whose sum is σ = 29609400960. Its totient is φ = 9868672448.

The previous prime is 18504818183. The next prime is 18504818207. The reversal of 18504818205 is 50281840581.

It is a cyclic number.

It is not a de Polignac number, because 18504818205 - 2⁵ = 18504818173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18504818207) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 465544 + ... + 503726.

It is an arithmetic number, because the mean of its divisors is an integer number (1850587560).

Almost surely, 2^18504818205 is an apocalyptic number.

18504818205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18504818205 is a deficient number, since it is larger than the sum of its proper divisors (11104582755).

18504818205 is a wasteful number, since it uses less digits than its factorization.

18504818205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70500.

The product of its (nonzero) digits is 102400, while the sum is 42.

The spelling of 18504818205 in words is "eighteen billion, five hundred four million, eight hundred eighteen thousand, two hundred five".