1283796889 has 2 divisors, whose sum is σ = 1283796890. Its totient is φ = 1283796888.

The previous prime is 1283796887. The next prime is 1283796919. The reversal of 1283796889 is 9886973821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1227801600 + 55995289 = 35040^2 + 7483^2 .

It is a cyclic number.

It is not a de Polignac number, because 1283796889 - 2¹ = 1283796887 is a prime.

Together with 1283796887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1283796887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641898444 + 641898445.

It is an arithmetic number, because the mean of its divisors is an integer number (641898445).

Almost surely, 2^1283796889 is an apocalyptic number.

It is an amenable number.

1283796889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283796889 is an equidigital number, since it uses as much as digits as its factorization.

1283796889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 61.

The square root of 1283796889 is about 35830.1114846158. Note that the first 3 decimals coincide. The cubic root of 1283796889 is about 1086.8395641917.

The spelling of 1283796889 in words is "one billion, two hundred eighty-three million, seven hundred ninety-six thousand, eight hundred eighty-nine".