2133209989 has 2 divisors, whose sum is σ = 2133209990. Its totient is φ = 2133209988.

The previous prime is 2133209941. The next prime is 2133209993. The reversal of 2133209989 is 9899023312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1849860100 + 283349889 = 43010^2 + 16833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2133209989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133209999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066604994 + 1066604995.

It is an arithmetic number, because the mean of its divisors is an integer number (1066604995).

Almost surely, 2^2133209989 is an apocalyptic number.

It is an amenable number.

2133209989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133209989 is an equidigital number, since it uses as much as digits as its factorization.

2133209989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 2133209989 is about 46186.6862742934. The cubic root of 2133209989 is about 1287.2943690701.

The spelling of 2133209989 in words is "two billion, one hundred thirty-three million, two hundred nine thousand, nine hundred eighty-nine".