18873478473 has 8 divisors (see below), whose sum is σ = 25509359328. Its totient is φ = 12409958304.

The previous prime is 18873478469. The next prime is 18873478493. The reversal of 18873478473 is 37487437881.

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

It is not a de Polignac number, because 18873478473 - 2² = 18873478469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18873478453) 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, 43089915 + ... + 43090352.

It is an arithmetic number, because the mean of its divisors is an integer number (3188669916).

Almost surely, 2^18873478473 is an apocalyptic number.

It is an amenable number.

18873478473 is a deficient number, since it is larger than the sum of its proper divisors (6635880855).

18873478473 is an equidigital number, since it uses as much as digits as its factorization.

18873478473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86180343.

The product of its digits is 25288704, while the sum is 60.

The spelling of 18873478473 in words is "eighteen billion, eight hundred seventy-three million, four hundred seventy-eight thousand, four hundred seventy-three".