18027333793 has 4 divisors (see below), whose sum is σ = 20602667200. Its totient is φ = 15452000388.

The previous prime is 18027333791. The next prime is 18027333809. The reversal of 18027333793 is 39733372081.

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 18027333793 - 2¹ = 18027333791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18027333791) 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, 1287666693 + ... + 1287666706.

It is an arithmetic number, because the mean of its divisors is an integer number (5150666800).

Almost surely, 2^18027333793 is an apocalyptic number.

It is an amenable number.

18027333793 is a deficient number, since it is larger than the sum of its proper divisors (2575333407).

18027333793 is an equidigital number, since it uses as much as digits as its factorization.

18027333793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575333406.

The product of its (nonzero) digits is 571536, while the sum is 46.

The spelling of 18027333793 in words is "eighteen billion, twenty-seven million, three hundred thirty-three thousand, seven hundred ninety-three".