1028489311 has 2 divisors, whose sum is σ = 1028489312. Its totient is φ = 1028489310.

The previous prime is 1028489309. The next prime is 1028489339. The reversal of 1028489311 is 1139848201.

It is a weak prime.

It is an emirp because it is prime and its reverse (1139848201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1028489311 - 2¹ = 1028489309 is a prime.

Together with 1028489309, 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 (1028489411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514244655 + 514244656.

It is an arithmetic number, because the mean of its divisors is an integer number (514244656).

Almost surely, 2^1028489311 is an apocalyptic number.

1028489311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028489311 is an equidigital number, since it uses as much as digits as its factorization.

1028489311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1028489311 is about 32070.0687713637. The cubic root of 1028489311 is about 1009.4076554800.

The spelling of 1028489311 in words is "one billion, twenty-eight million, four hundred eighty-nine thousand, three hundred eleven".