18589013 has 2 divisors, whose sum is σ = 18589014. Its totient is φ = 18589012.

The previous prime is 18589001. The next prime is 18589033. The reversal of 18589013 is 31098581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13823524 + 4765489 = 3718^2 + 2183^2 .

It is an emirp because it is prime and its reverse (31098581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18589013 - 2²⁰ = 17540437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18589033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9294506 + 9294507.

It is an arithmetic number, because the mean of its divisors is an integer number (9294507).

Almost surely, 2^18589013 is an apocalyptic number.

It is an amenable number.

18589013 is a deficient number, since it is larger than the sum of its proper divisors (1).

18589013 is an equidigital number, since it uses as much as digits as its factorization.

18589013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 18589013 is about 4311.4977675977. The cubic root of 18589013 is about 264.9021259541.

It can be divided in two parts, 185 and 89013, that added together give a palindrome (89198).

The spelling of 18589013 in words is "eighteen million, five hundred eighty-nine thousand, thirteen".