18674889247 has 8 divisors (see below), whose sum is σ = 21431291552. Its totient is φ = 15940627200.

The previous prime is 18674889217. The next prime is 18674889287. The reversal of 18674889247 is 74298847681.

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 18674889247 - 2¹¹ = 18674887199 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 (18674889217) 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, 5533254 + ... + 5536627.

It is an arithmetic number, because the mean of its divisors is an integer number (2678911444).

Almost surely, 2^18674889247 is an apocalyptic number.

18674889247 is a deficient number, since it is larger than the sum of its proper divisors (2756402305).

18674889247 is a wasteful number, since it uses less digits than its factorization.

18674889247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070129.

The product of its digits is 43352064, while the sum is 64.

The spelling of 18674889247 in words is "eighteen billion, six hundred seventy-four million, eight hundred eighty-nine thousand, two hundred forty-seven".