18811713 has 8 divisors (see below), whose sum is σ = 25125408. Its totient is φ = 12519584.

The previous prime is 18811711. The next prime is 18811757. The reversal of 18811713 is 31711881.

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 not a de Polignac number, because 18811713 - 2¹ = 18811711 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18811711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3231 + ... + 6932.

It is an arithmetic number, because the mean of its divisors is an integer number (3140676).

Almost surely, 2^18811713 is an apocalyptic number.

It is an amenable number.

18811713 is a deficient number, since it is larger than the sum of its proper divisors (6313695).

18811713 is a wasteful number, since it uses less digits than its factorization.

18811713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10783.

The product of its digits is 1344, while the sum is 30.

The square root of 18811713 is about 4337.2471684238. The cubic root of 18811713 is about 265.9557890983.

The spelling of 18811713 in words is "eighteen million, eight hundred eleven thousand, seven hundred thirteen".