1028591233 has 2 divisors, whose sum is σ = 1028591234. Its totient is φ = 1028591232.

The previous prime is 1028591209. The next prime is 1028591251. The reversal of 1028591233 is 3321958201.

1028591233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 637461504 + 391129729 = 25248^2 + 19777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028591233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1028591293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514295616 + 514295617.

It is an arithmetic number, because the mean of its divisors is an integer number (514295617).

Almost surely, 2^1028591233 is an apocalyptic number.

It is an amenable number.

1028591233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028591233 is an equidigital number, since it uses as much as digits as its factorization.

1028591233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1028591233 is about 32071.6577837816. The cubic root of 1028591233 is about 1009.4409980560.

The spelling of 1028591233 in words is "one billion, twenty-eight million, five hundred ninety-one thousand, two hundred thirty-three".