18338477347 has 8 divisors (see below), whose sum is σ = 18421785360. Its totient is φ = 18255229440.

The previous prime is 18338477341. The next prime is 18338477359. The reversal of 18338477347 is 74377483381.

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

It is a de Polignac number, because none of the positive numbers 2^k-18338477347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18338477341) 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, 665883 + ... + 692875.

It is an arithmetic number, because the mean of its divisors is an integer number (2302723170).

Almost surely, 2^18338477347 is an apocalyptic number.

18338477347 is a deficient number, since it is larger than the sum of its proper divisors (83308013).

18338477347 is a wasteful number, since it uses less digits than its factorization.

18338477347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30053.

The product of its digits is 9483264, while the sum is 55.

The spelling of 18338477347 in words is "eighteen billion, three hundred thirty-eight million, four hundred seventy-seven thousand, three hundred forty-seven".