18329341138 has 4 divisors (see below), whose sum is σ = 27494011710. Its totient is φ = 9164670568.

The previous prime is 18329341127. The next prime is 18329341153. The reversal of 18329341138 is 83114392381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17369394849 + 959946289 = 131793^2 + 30983^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18329341094 and 18329341103.

It is an unprimeable number.

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, 4582335283 + ... + 4582335286.

Almost surely, 2^18329341138 is an apocalyptic number.

18329341138 is a deficient number, since it is larger than the sum of its proper divisors (9164670572).

18329341138 is an equidigital number, since it uses as much as digits as its factorization.

18329341138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9164670571.

The product of its digits is 124416, while the sum is 43.

The spelling of 18329341138 in words is "eighteen billion, three hundred twenty-nine million, three hundred forty-one thousand, one hundred thirty-eight".