18756713 has 4 divisors (see below), whose sum is σ = 19155840. Its totient is φ = 18357588.

The previous prime is 18756701. The next prime is 18756719. The reversal of 18756713 is 31765781.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31765781 = 1759 ⋅18059.

It is a cyclic number.

It is not a de Polignac number, because 18756713 - 2¹⁰ = 18755689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18756719) 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, 199493 + ... + 199586.

It is an arithmetic number, because the mean of its divisors is an integer number (4788960).

Almost surely, 2^18756713 is an apocalyptic number.

It is an amenable number.

18756713 is a deficient number, since it is larger than the sum of its proper divisors (399127).

18756713 is an equidigital number, since it uses as much as digits as its factorization.

18756713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399126.

The product of its digits is 35280, while the sum is 38.

The square root of 18756713 is about 4330.9021000249. The cubic root of 18756713 is about 265.6963435214.

The spelling of 18756713 in words is "eighteen million, seven hundred fifty-six thousand, seven hundred thirteen".