18478342317 has 8 divisors (see below), whose sum is σ = 24664314240. Its totient is φ = 12305632640.

The previous prime is 18478342283. The next prime is 18478342349. The reversal of 18478342317 is 71324387481.

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

It is a cyclic number.

It is not a de Polignac number, because 18478342317 - 2³¹ = 16330858669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18478342367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3312309 + ... + 3317882.

It is an arithmetic number, because the mean of its divisors is an integer number (3083039280).

Almost surely, 2^18478342317 is an apocalyptic number.

It is an amenable number.

18478342317 is a deficient number, since it is larger than the sum of its proper divisors (6185971923).

18478342317 is an equidigital number, since it uses as much as digits as its factorization.

18478342317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631123.

The product of its digits is 903168, while the sum is 48.

The spelling of 18478342317 in words is "eighteen billion, four hundred seventy-eight million, three hundred forty-two thousand, three hundred seventeen".