18678328343 has 2 divisors, whose sum is σ = 18678328344. Its totient is φ = 18678328342.

The previous prime is 18678328307. The next prime is 18678328363. The reversal of 18678328343 is 34382387681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18678328343 - 2¹⁴ = 18678311959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18678328363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9339164171 + 9339164172.

It is an arithmetic number, because the mean of its divisors is an integer number (9339164172).

Almost surely, 2^18678328343 is an apocalyptic number.

18678328343 is a deficient number, since it is larger than the sum of its proper divisors (1).

18678328343 is an equidigital number, since it uses as much as digits as its factorization.

18678328343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 53.

The spelling of 18678328343 in words is "eighteen billion, six hundred seventy-eight million, three hundred twenty-eight thousand, three hundred forty-three".