18543713 has 2 divisors, whose sum is σ = 18543714. Its totient is φ = 18543712.

The previous prime is 18543671. The next prime is 18543737. The reversal of 18543713 is 31734581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11404129 + 7139584 = 3377^2 + 2672^2 .

It is a cyclic number.

It is not a de Polignac number, because 18543713 - 2⁶ = 18543649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18543713.

It is not a weakly prime, because it can be changed into another prime (18543743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9271856 + 9271857.

It is an arithmetic number, because the mean of its divisors is an integer number (9271857).

Almost surely, 2^18543713 is an apocalyptic number.

It is an amenable number.

18543713 is a deficient number, since it is larger than the sum of its proper divisors (1).

18543713 is an equidigital number, since it uses as much as digits as its factorization.

18543713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 18543713 is about 4306.2411683509. The cubic root of 18543713 is about 264.6867688634.

The spelling of 18543713 in words is "eighteen million, five hundred forty-three thousand, seven hundred thirteen".