18842713 has 4 divisors (see below), whose sum is σ = 18937600. Its totient is φ = 18747828.

The previous prime is 18842693. The next prime is 18842741. The reversal of 18842713 is 31724881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18842713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18842413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47145 + ... + 47542.

It is an arithmetic number, because the mean of its divisors is an integer number (4734400).

Almost surely, 2^18842713 is an apocalyptic number.

It is an amenable number.

18842713 is a deficient number, since it is larger than the sum of its proper divisors (94887).

18842713 is an equidigital number, since it uses as much as digits as its factorization.

18842713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94886.

The product of its digits is 10752, while the sum is 34.

The square root of 18842713 is about 4340.8193926953. The cubic root of 18842713 is about 266.1017992783.

The spelling of 18842713 in words is "eighteen million, eight hundred forty-two thousand, seven hundred thirteen".