1028545099 has 4 divisors (see below), whose sum is σ = 1028812264. Its totient is φ = 1028277936.

The previous prime is 1028545087. The next prime is 1028545127. The reversal of 1028545099 is 9905458201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1028545099 - 2²³ = 1020156491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028545009) 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 3 ways as a sum of consecutive naturals, for example, 127722 + ... + 135535.

It is an arithmetic number, because the mean of its divisors is an integer number (257203066).

Almost surely, 2^1028545099 is an apocalyptic number.

1028545099 is a deficient number, since it is larger than the sum of its proper divisors (267165).

1028545099 is an equidigital number, since it uses as much as digits as its factorization.

1028545099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267164.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 1028545099 is about 32070.9385425497. The cubic root of 1028545099 is about 1009.4259061368.

The spelling of 1028545099 in words is "one billion, twenty-eight million, five hundred forty-five thousand, ninety-nine".