18453713 has 4 divisors (see below), whose sum is σ = 18952500. Its totient is φ = 17954928.

The previous prime is 18453709. The next prime is 18453727. The reversal of 18453713 is 31735481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8162449 + 10291264 = 2857^2 + 3208^2 .

It is a cyclic number.

It is not a de Polignac number, because 18453713 - 2² = 18453709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18453713.

It is not an unprimeable number, because it can be changed into a prime (18453703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249338 + ... + 249411.

It is an arithmetic number, because the mean of its divisors is an integer number (4738125).

Almost surely, 2^18453713 is an apocalyptic number.

It is an amenable number.

18453713 is a deficient number, since it is larger than the sum of its proper divisors (498787).

18453713 is an equidigital number, since it uses as much as digits as its factorization.

18453713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498786.

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

The square root of 18453713 is about 4295.7785091878. The cubic root of 18453713 is about 264.2578642468.

The spelling of 18453713 in words is "eighteen million, four hundred fifty-three thousand, seven hundred thirteen".