18374923347 has 8 divisors (see below), whose sum is σ = 26727161280. Its totient is φ = 11136317160.

The previous prime is 18374923339. The next prime is 18374923349. The reversal of 18374923347 is 74332947381.

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

It is not a de Polignac number, because 18374923347 - 2³ = 18374923339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18374923347.

It is not an unprimeable number, because it can be changed into a prime (18374923349) 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, 278407897 + ... + 278407962.

It is an arithmetic number, because the mean of its divisors is an integer number (3340895160).

Almost surely, 2^18374923347 is an apocalyptic number.

18374923347 is a deficient number, since it is larger than the sum of its proper divisors (8352237933).

18374923347 is a wasteful number, since it uses less digits than its factorization.

18374923347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556815873.

The product of its digits is 3048192, while the sum is 51.

The spelling of 18374923347 in words is "eighteen billion, three hundred seventy-four million, nine hundred twenty-three thousand, three hundred forty-seven".