1028100079 has 2 divisors, whose sum is σ = 1028100080. Its totient is φ = 1028100078.

The previous prime is 1028100077. The next prime is 1028100097. The reversal of 1028100079 is 9700018201.

Together with next prime (1028100097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (9700018201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1028100079 - 2¹ = 1028100077 is a prime.

Together with 1028100077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028100077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514050039 + 514050040.

It is an arithmetic number, because the mean of its divisors is an integer number (514050040).

Almost surely, 2^1028100079 is an apocalyptic number.

1028100079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028100079 is an equidigital number, since it uses as much as digits as its factorization.

1028100079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1028100079 is about 32063.9997349052. Note that the first 3 decimals coincide. The cubic root of 1028100079 is about 1009.2803025653.

The spelling of 1028100079 in words is "one billion, twenty-eight million, one hundred thousand, seventy-nine".