18339940706 has 4 divisors (see below), whose sum is σ = 27509911062. Its totient is φ = 9169970352.

The previous prime is 18339940691. The next prime is 18339940747. The reversal of 18339940706 is 60704993381.

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., 17581434025 + 758506681 = 132595^2 + 27541^2 .

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, 4584985175 + ... + 4584985178.

Almost surely, 2^18339940706 is an apocalyptic number.

18339940706 is a deficient number, since it is larger than the sum of its proper divisors (9169970356).

18339940706 is an equidigital number, since it uses as much as digits as its factorization.

18339940706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9169970355.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 18339940706 in words is "eighteen billion, three hundred thirty-nine million, nine hundred forty thousand, seven hundred six".