1028127811 has 2 divisors, whose sum is σ = 1028127812. Its totient is φ = 1028127810.

The previous prime is 1028127809. The next prime is 1028127827. The reversal of 1028127811 is 1187218201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1028127811 - 2¹ = 1028127809 is a prime.

Together with 1028127809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1028127851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514063905 + 514063906.

It is an arithmetic number, because the mean of its divisors is an integer number (514063906).

Almost surely, 2^1028127811 is an apocalyptic number.

1028127811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028127811 is an equidigital number, since it uses as much as digits as its factorization.

1028127811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 31.

The square root of 1028127811 is about 32064.4321795974. The cubic root of 1028127811 is about 1009.2893772687.

The spelling of 1028127811 in words is "one billion, twenty-eight million, one hundred twenty-seven thousand, eight hundred eleven".