28831075789 has 2 divisors, whose sum is σ = 28831075790. Its totient is φ = 28831075788.

The previous prime is 28831075781. The next prime is 28831075799. The reversal of 28831075789 is 98757013882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28736013289 + 95062500 = 169517^2 + 9750^2 .

It is a cyclic number.

It is not a de Polignac number, because 28831075789 - 2³ = 28831075781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28831075781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14415537894 + 14415537895.

It is an arithmetic number, because the mean of its divisors is an integer number (14415537895).

Almost surely, 2^28831075789 is an apocalyptic number.

It is an amenable number.

28831075789 is a deficient number, since it is larger than the sum of its proper divisors (1).

28831075789 is an equidigital number, since it uses as much as digits as its factorization.

28831075789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 58.

The spelling of 28831075789 in words is "twenty-eight billion, eight hundred thirty-one million, seventy-five thousand, seven hundred eighty-nine".