1028509304849 has 32 divisors (see below), whose sum is σ = 1200314379264. Its totient is φ = 873756797760.

The previous prime is 1028509304843. The next prime is 1028509304857. The reversal of 1028509304849 is 9484039058201.

It is a cyclic number.

It is not a de Polignac number, because 1028509304849 - 2⁴ = 1028509304833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1028509304849.

It is not an unprimeable number, because it can be changed into a prime (1028509304843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264434 + ... + 1458404.

It is an arithmetic number, because the mean of its divisors is an integer number (37509824352).

Almost surely, 2^{1028509304849} is an apocalyptic number.

It is an amenable number.

1028509304849 is a deficient number, since it is larger than the sum of its proper divisors (171805074415).

1028509304849 is a wasteful number, since it uses less digits than its factorization.

1028509304849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194117.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 1028509304849 in words is "one trillion, twenty-eight billion, five hundred nine million, three hundred four thousand, eight hundred forty-nine".