18504770317 has 8 divisors (see below), whose sum is σ = 21374494272. Its totient is φ = 15832958400.

The previous prime is 18504770311. The next prime is 18504770363. The reversal of 18504770317 is 71307740581.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18504770317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18504770311) 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 7 ways as a sum of consecutive naturals, for example, 49477809 + ... + 49478182.

It is an arithmetic number, because the mean of its divisors is an integer number (2671811784).

Almost surely, 2^18504770317 is an apocalyptic number.

18504770317 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18504770317 is a deficient number, since it is larger than the sum of its proper divisors (2869723955).

18504770317 is a wasteful number, since it uses less digits than its factorization.

18504770317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98956019.

The product of its (nonzero) digits is 164640, while the sum is 43.

The spelling of 18504770317 in words is "eighteen billion, five hundred four million, seven hundred seventy thousand, three hundred seventeen".