18327369605 has 16 divisors (see below), whose sum is σ = 23517111024. Its totient is φ = 13662796800.

The previous prime is 18327369559. The next prime is 18327369649. The reversal of 18327369605 is 50696372381.

It can be written as a sum of positive squares in 8 ways, for example, as 2143967809 + 16183401796 = 46303^2 + 127214^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18327369605 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1058822 + ... + 1075991.

It is an arithmetic number, because the mean of its divisors is an integer number (1469819439).

Almost surely, 2^18327369605 is an apocalyptic number.

It is an amenable number.

18327369605 is a deficient number, since it is larger than the sum of its proper divisors (5189741419).

18327369605 is a wasteful number, since it uses less digits than its factorization.

18327369605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134936.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 18327369605 in words is "eighteen billion, three hundred twenty-seven million, three hundred sixty-nine thousand, six hundred five".