18328728259 has 2 divisors, whose sum is σ = 18328728260. Its totient is φ = 18328728258.

The previous prime is 18328728241. The next prime is 18328728281. The reversal of 18328728259 is 95282782381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18328728259 - 2¹⁷ = 18328597187 is a prime.

It is not a weakly prime, because it can be changed into another prime (18328728239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9164364129 + 9164364130.

It is an arithmetic number, because the mean of its divisors is an integer number (9164364130).

Almost surely, 2^18328728259 is an apocalyptic number.

18328728259 is a deficient number, since it is larger than the sum of its proper divisors (1).

18328728259 is an equidigital number, since it uses as much as digits as its factorization.

18328728259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 55.

The spelling of 18328728259 in words is "eighteen billion, three hundred twenty-eight million, seven hundred twenty-eight thousand, two hundred fifty-nine".