18284713 has 2 divisors, whose sum is σ = 18284714. Its totient is φ = 18284712.

The previous prime is 18284711. The next prime is 18284719. The reversal of 18284713 is 31748281.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18079504 + 205209 = 4252^2 + 453^2 .

It is an emirp because it is prime and its reverse (31748281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18284713 - 2¹ = 18284711 is a prime.

Together with 18284711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18284711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9142356 + 9142357.

It is an arithmetic number, because the mean of its divisors is an integer number (9142357).

Almost surely, 2^18284713 is an apocalyptic number.

It is an amenable number.

18284713 is a deficient number, since it is larger than the sum of its proper divisors (1).

18284713 is an equidigital number, since it uses as much as digits as its factorization.

18284713 is an odious number, because the sum of its binary digits is odd.

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

The square root of 18284713 is about 4276.0627918682. The cubic root of 18284713 is about 263.4486936031.

The spelling of 18284713 in words is "eighteen million, two hundred eighty-four thousand, seven hundred thirteen".