1028838976489 has 3 divisors (see below), whose sum is σ = 1028839990807. Its totient is φ = 1028837962172.

The previous prime is 1028838976423. The next prime is 1028838976519. The reversal of 1028838976489 is 9846798388201.

The square root of 1028838976489 is 1014317.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 362506347225 + 666332629264 = 602085^2 + 816292^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1028838976489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028838976189) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 507159 + ... + 1521475.

Almost surely, 2^{1028838976489} is an apocalyptic number.

1028838976489 is the 1014317-th square number.

1028838976489 is the 507159-th centered octagonal number.

It is an amenable number.

1028838976489 is a deficient number, since it is larger than the sum of its proper divisors (1014318).

1028838976489 is an frugal number, since it uses more digits than its factorization.

1028838976489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028634 (or 1014317 counting only the distinct ones).

The product of its (nonzero) digits is 334430208, while the sum is 73.

The spelling of 1028838976489 in words is "one trillion, twenty-eight billion, eight hundred thirty-eight million, nine hundred seventy-six thousand, four hundred eighty-nine".