18716 has 6 divisors (see below), whose sum is σ = 32760. Its totient is φ = 9356.

The previous prime is 18713. The next prime is 18719. The reversal of 18716 is 61781.

It is an interprime number because it is at equal distance from previous prime (18713) and next prime (18719).

It is a junction number, because it is equal to n+sod(n) for n = 18691 and 18700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2336 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (5460).

2¹⁸⁷¹⁶ is an apocalyptic number.

It is an amenable number.

18716 is a deficient number, since it is larger than the sum of its proper divisors (14044).

18716 is a wasteful number, since it uses less digits than its factorization.

18716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4683 (or 4681 counting only the distinct ones).

The product of its digits is 336, while the sum is 23.

The square root of 18716 is about 136.8064325973. The cubic root of 18716 is about 26.5503965619.

It can be divided in two parts, 187 and 16, that multiplied together give a palindrome (2992).

The spelling of 18716 in words is "eighteen thousand, seven hundred sixteen".