1020882889 has 4 divisors (see below), whose sum is σ = 1099412356. Its totient is φ = 942353424.

The previous prime is 1020882883. The next prime is 1020882913. The reversal of 1020882889 is 9882880201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 127351225 + 893531664 = 11285^2 + 29892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020882889 - 2⁹ = 1020882377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020882883) 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, 39264714 + ... + 39264739.

It is an arithmetic number, because the mean of its divisors is an integer number (274853089).

Almost surely, 2^1020882889 is an apocalyptic number.

It is an amenable number.

1020882889 is a deficient number, since it is larger than the sum of its proper divisors (78529467).

1020882889 is an equidigital number, since it uses as much as digits as its factorization.

1020882889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78529466.

The product of its (nonzero) digits is 147456, while the sum is 46.

The square root of 1020882889 is about 31951.2580190515. The cubic root of 1020882889 is about 1006.9130624416.

The spelling of 1020882889 in words is "one billion, twenty million, eight hundred eighty-two thousand, eight hundred eighty-nine".