28818341089 has 2 divisors, whose sum is σ = 28818341090. Its totient is φ = 28818341088.

The previous prime is 28818341077. The next prime is 28818341099. The reversal of 28818341089 is 98014381882.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27628091089 + 1190250000 = 166217^2 + 34500^2 .

It is a cyclic number.

It is not a de Polignac number, because 28818341089 - 2⁷ = 28818340961 is a prime.

It is not a weakly prime, because it can be changed into another prime (28818341039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14409170544 + 14409170545.

It is an arithmetic number, because the mean of its divisors is an integer number (14409170545).

Almost surely, 2^28818341089 is an apocalyptic number.

It is an amenable number.

28818341089 is a deficient number, since it is larger than the sum of its proper divisors (1).

28818341089 is an equidigital number, since it uses as much as digits as its factorization.

28818341089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 884736, while the sum is 52.

The spelling of 28818341089 in words is "twenty-eight billion, eight hundred eighteen million, three hundred forty-one thousand, eighty-nine".