1028453899 has 12 divisors (see below), whose sum is σ = 1131649120. Its totient is φ = 933966000.

The previous prime is 1028453893. The next prime is 1028453917. The reversal of 1028453899 is 9983548201.

It is not a de Polignac number, because 1028453899 - 2³ = 1028453891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028453891) 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 11 ways as a sum of consecutive naturals, for example, 125374 + ... + 133324.

Almost surely, 2^1028453899 is an apocalyptic number.

1028453899 is a deficient number, since it is larger than the sum of its proper divisors (103195221).

1028453899 is a wasteful number, since it uses less digits than its factorization.

1028453899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9042 (or 9031 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 1028453899 is about 32069.5166630244. The cubic root of 1028453899 is about 1009.3960703478.

The spelling of 1028453899 in words is "one billion, twenty-eight million, four hundred fifty-three thousand, eight hundred ninety-nine".