28270819589 has 2 divisors, whose sum is σ = 28270819590. Its totient is φ = 28270819588.

The previous prime is 28270819531. The next prime is 28270819601. The reversal of 28270819589 is 98591807282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20066988964 + 8203830625 = 141658^2 + 90575^2 .

It is a cyclic number.

It is not a de Polignac number, because 28270819589 - 2³² = 23975852293 is a prime.

It is a super-2 number, since 2×28270819589² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28270819189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14135409794 + 14135409795.

It is an arithmetic number, because the mean of its divisors is an integer number (14135409795).

Almost surely, 2^28270819589 is an apocalyptic number.

It is an amenable number.

28270819589 is a deficient number, since it is larger than the sum of its proper divisors (1).

28270819589 is an equidigital number, since it uses as much as digits as its factorization.

28270819589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 59.

The spelling of 28270819589 in words is "twenty-eight billion, two hundred seventy million, eight hundred nineteen thousand, five hundred eighty-nine".