18668350367 has 4 divisors (see below), whose sum is σ = 18668711256. Its totient is φ = 18667989480.

The previous prime is 18668350291. The next prime is 18668350397. The reversal of 18668350367 is 76305386681.

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 18668350367 - 2¹⁸ = 18668088223 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 (18668350397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86573 + ... + 211734.

It is an arithmetic number, because the mean of its divisors is an integer number (4667177814).

Almost surely, 2^18668350367 is an apocalyptic number.

18668350367 is a deficient number, since it is larger than the sum of its proper divisors (360889).

18668350367 is an equidigital number, since it uses as much as digits as its factorization.

18668350367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360888.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 18668350367 in words is "eighteen billion, six hundred sixty-eight million, three hundred fifty thousand, three hundred sixty-seven".