1028895469 has 4 divisors (see below), whose sum is σ = 1175880544. Its totient is φ = 881910396.

The previous prime is 1028895431. The next prime is 1028895493. The reversal of 1028895469 is 9645988201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1028895469 - 2⁷ = 1028895341 is a prime.

It is a super-2 number, since 2×1028895469² = 2117251772257459922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028895169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73492527 + ... + 73492540.

It is an arithmetic number, because the mean of its divisors is an integer number (293970136).

Almost surely, 2^1028895469 is an apocalyptic number.

It is an amenable number.

1028895469 is a deficient number, since it is larger than the sum of its proper divisors (146985075).

1028895469 is an equidigital number, since it uses as much as digits as its factorization.

1028895469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146985074.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 1028895469 is about 32076.4004994326. The cubic root of 1028895469 is about 1009.5405121641.

The spelling of 1028895469 in words is "one billion, twenty-eight million, eight hundred ninety-five thousand, four hundred sixty-nine".