1028591193 has 48 divisors (see below), whose sum is σ = 1660642560. Its totient is φ = 564406752.

The previous prime is 1028591189. The next prime is 1028591197. The reversal of 1028591193 is 3911958201.

It is an interprime number because it is at equal distance from previous prime (1028591189) and next prime (1028591197).

It is not a de Polignac number, because 1028591193 - 2² = 1028591189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028591197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19407355 + ... + 19407407.

It is an arithmetic number, because the mean of its divisors is an integer number (34596720).

Almost surely, 2^1028591193 is an apocalyptic number.

It is an amenable number.

1028591193 is a deficient number, since it is larger than the sum of its proper divisors (632051367).

1028591193 is an frugal number, since it uses more digits than its factorization.

1028591193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 1028591193 is about 32071.6571601781. The cubic root of 1028591193 is about 1009.4409849709.

The spelling of 1028591193 in words is "one billion, twenty-eight million, five hundred ninety-one thousand, one hundred ninety-three".