2143204489 has 2 divisors, whose sum is σ = 2143204490. Its totient is φ = 2143204488.

The previous prime is 2143204477. The next prime is 2143204517. The reversal of 2143204489 is 9844023412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1971804025 + 171400464 = 44405^2 + 13092^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143204489 - 2¹⁷ = 2143073417 is a prime.

It is a super-3 number, since 3×2143204489³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2143204289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071602244 + 1071602245.

It is an arithmetic number, because the mean of its divisors is an integer number (1071602245).

Almost surely, 2^2143204489 is an apocalyptic number.

It is an amenable number.

2143204489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143204489 is an equidigital number, since it uses as much as digits as its factorization.

2143204489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 2143204489 is about 46294.7566037451. The cubic root of 2143204489 is about 1289.3016449216.

The spelling of 2143204489 in words is "two billion, one hundred forty-three million, two hundred four thousand, four hundred eighty-nine".