28330998193 has 2 divisors, whose sum is σ = 28330998194. Its totient is φ = 28330998192.

The previous prime is 28330998139. The next prime is 28330998203. The reversal of 28330998193 is 39189903382.

Together with previous prime (28330998139) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19200813489 + 9130184704 = 138567^2 + 95552^2 .

It is a cyclic number.

It is not a de Polignac number, because 28330998193 - 2²⁵ = 28297443761 is a prime.

It is a super-2 number, since 2×28330998193² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28330998133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14165499096 + 14165499097.

It is an arithmetic number, because the mean of its divisors is an integer number (14165499097).

Almost surely, 2^28330998193 is an apocalyptic number.

It is an amenable number.

28330998193 is a deficient number, since it is larger than the sum of its proper divisors (1).

28330998193 is an equidigital number, since it uses as much as digits as its factorization.

28330998193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The spelling of 28330998193 in words is "twenty-eight billion, three hundred thirty million, nine hundred ninety-eight thousand, one hundred ninety-three".