18703724113 has 8 divisors (see below), whose sum is σ = 19163644416. Its totient is φ = 18243981600.

The previous prime is 18703724077. The next prime is 18703724189. The reversal of 18703724113 is 31142730781.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18703724113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18703724713) 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, 182620 + ... + 266002.

It is an arithmetic number, because the mean of its divisors is an integer number (2395455552).

Almost surely, 2^18703724113 is an apocalyptic number.

It is an amenable number.

18703724113 is a deficient number, since it is larger than the sum of its proper divisors (459920303).

18703724113 is an equidigital number, since it uses as much as digits as its factorization.

18703724113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88895.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 18703724113 in words is "eighteen billion, seven hundred three million, seven hundred twenty-four thousand, one hundred thirteen".