18678328307 has 2 divisors, whose sum is σ = 18678328308. Its totient is φ = 18678328306.

The previous prime is 18678328301. The next prime is 18678328343. The reversal of 18678328307 is 70382387681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18678328307 - 2³² = 14383361011 is a prime.

It is not a weakly prime, because it can be changed into another prime (18678328301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9339164153 + 9339164154.

It is an arithmetic number, because the mean of its divisors is an integer number (9339164154).

Almost surely, 2^18678328307 is an apocalyptic number.

18678328307 is a deficient number, since it is larger than the sum of its proper divisors (1).

18678328307 is an equidigital number, since it uses as much as digits as its factorization.

18678328307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 18678328307 in words is "eighteen billion, six hundred seventy-eight million, three hundred twenty-eight thousand, three hundred seven".