2143189489 has 12 divisors (see below), whose sum is σ = 2518805604. Its totient is φ = 1818077184.

The previous prime is 2143189483. The next prime is 2143189547. The reversal of 2143189489 is 9849813412.

It can be written as a sum of positive squares in 2 ways, for example, as 331240000 + 1811949489 = 18200^2 + 42567^2 .

It is not a de Polignac number, because 2143189489 - 2³ = 2143189481 is a prime.

It is a super-2 number, since 2×2143189489² = 9186522371520162242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (2143189481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220704 + ... + 230209.

It is an arithmetic number, because the mean of its divisors is an integer number (209900467).

Almost surely, 2^2143189489 is an apocalyptic number.

It is an amenable number.

2143189489 is a deficient number, since it is larger than the sum of its proper divisors (375616115).

2143189489 is an equidigital number, since it uses as much as digits as its factorization.

2143189489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451024 (or 451017 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 2143189489 is about 46294.5945980738. The cubic root of 2143189489 is about 1289.2986370317.

The spelling of 2143189489 in words is "two billion, one hundred forty-three million, one hundred eighty-nine thousand, four hundred eighty-nine".