18012827593 has 4 divisors (see below), whose sum is σ = 18019594368. Its totient is φ = 18006060820.

The previous prime is 18012827579. The next prime is 18012827611. The reversal of 18012827593 is 39572821081.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 18012827593 - 2²⁵ = 17979273161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18012827533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3379393 + ... + 3384718.

It is an arithmetic number, because the mean of its divisors is an integer number (4504898592).

Almost surely, 2^18012827593 is an apocalyptic number.

It is an amenable number.

18012827593 is a deficient number, since it is larger than the sum of its proper divisors (6766775).

18012827593 is an equidigital number, since it uses as much as digits as its factorization.

18012827593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6766774.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 18012827593 in words is "eighteen billion, twelve million, eight hundred twenty-seven thousand, five hundred ninety-three".