2143522489 has 2 divisors, whose sum is σ = 2143522490. Its totient is φ = 2143522488.

The previous prime is 2143522483. The next prime is 2143522519. The reversal of 2143522489 is 9842253412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1607368464 + 536154025 = 40092^2 + 23155^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143522489 - 2⁹ = 2143521977 is a prime.

It is a super-4 number, since 4×2143522489⁴ (a number of 38 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (2143522483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071761244 + 1071761245.

It is an arithmetic number, because the mean of its divisors is an integer number (1071761245).

Almost surely, 2^2143522489 is an apocalyptic number.

It is an amenable number.

2143522489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143522489 is an equidigital number, since it uses as much as digits as its factorization.

2143522489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The square root of 2143522489 is about 46298.1909905776. The cubic root of 2143522489 is about 1289.3654088864.

The spelling of 2143522489 in words is "two billion, one hundred forty-three million, five hundred twenty-two thousand, four hundred eighty-nine".