18379299679 has 4 divisors (see below), whose sum is σ = 19793091976. Its totient is φ = 16965507384.

The previous prime is 18379299647. The next prime is 18379299689. The reversal of 18379299679 is 97699297381.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18379299679 - 2⁵ = 18379299647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18379299619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706896129 + ... + 706896154.

It is an arithmetic number, because the mean of its divisors is an integer number (4948272994).

Almost surely, 2^18379299679 is an apocalyptic number.

18379299679 is a deficient number, since it is larger than the sum of its proper divisors (1413792297).

18379299679 is a wasteful number, since it uses less digits than its factorization.

18379299679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413792296.

The product of its digits is 92588832, while the sum is 70.

The spelling of 18379299679 in words is "eighteen billion, three hundred seventy-nine million, two hundred ninety-nine thousand, six hundred seventy-nine".