18012583 has 2 divisors, whose sum is σ = 18012584. Its totient is φ = 18012582.

The previous prime is 18012569. The next prime is 18012613. The reversal of 18012583 is 38521081.

It is a weak prime.

It is an emirp because it is prime and its reverse (38521081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18012583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18012083) 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, 9006291 + 9006292.

It is an arithmetic number, because the mean of its divisors is an integer number (9006292).

Almost surely, 2^18012583 is an apocalyptic number.

18012583 is a deficient number, since it is larger than the sum of its proper divisors (1).

18012583 is an equidigital number, since it uses as much as digits as its factorization.

18012583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 18012583 is about 4244.1233488201. The cubic root of 18012583 is about 262.1351933241.

The spelling of 18012583 in words is "eighteen million, twelve thousand, five hundred eighty-three".