1121962489 has 2 divisors, whose sum is σ = 1121962490. Its totient is φ = 1121962488.

The previous prime is 1121962453. The next prime is 1121962511. The reversal of 1121962489 is 9842691211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 990172089 + 131790400 = 31467^2 + 11480^2 .

It is an emirp because it is prime and its reverse (9842691211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121962489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121962409) 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 as a sum of consecutive naturals, namely, 560981244 + 560981245.

It is an arithmetic number, because the mean of its divisors is an integer number (560981245).

Almost surely, 2^1121962489 is an apocalyptic number.

It is an amenable number.

1121962489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121962489 is an equidigital number, since it uses as much as digits as its factorization.

1121962489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 43.

The square root of 1121962489 is about 33495.7085161667. The cubic root of 1121962489 is about 1039.1050267098.

The spelling of 1121962489 in words is "one billion, one hundred twenty-one million, nine hundred sixty-two thousand, four hundred eighty-nine".