18044713 has 4 divisors (see below), whose sum is σ = 18077328. Its totient is φ = 18012100.

The previous prime is 18044683. The next prime is 18044717. The reversal of 18044713 is 31744081.

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: 31744081 = 311 ⋅102071.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18044713 is a prime.

It is a super-4 number, since 4×18044713⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18044717) 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, 15463 + ... + 16588.

It is an arithmetic number, because the mean of its divisors is an integer number (4519332).

Almost surely, 2^18044713 is an apocalyptic number.

It is an amenable number.

18044713 is a deficient number, since it is larger than the sum of its proper divisors (32615).

18044713 is an equidigital number, since it uses as much as digits as its factorization.

18044713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32614.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 18044713 is about 4247.9068963432. The cubic root of 18044713 is about 262.2909622272.

Adding to 18044713 its reverse (31744081), we get a palindrome (49788794).

The spelling of 18044713 in words is "eighteen million, forty-four thousand, seven hundred thirteen".