2143349989 has 16 divisors (see below), whose sum is σ = 2402193024. Its totient is φ = 1895449600.

The previous prime is 2143349941. The next prime is 2143350017. The reversal of 2143349989 is 9899433412.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2143349989 is a prime.

It is a super-3 number, since 3×2143349989³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143349909) 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 in 15 ways as a sum of consecutive naturals, for example, 152472 + ... + 165934.

It is an arithmetic number, because the mean of its divisors is an integer number (150137064).

Almost surely, 2^2143349989 is an apocalyptic number.

It is an amenable number.

2143349989 is a deficient number, since it is larger than the sum of its proper divisors (258843035).

2143349989 is a wasteful number, since it uses less digits than its factorization.

2143349989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13868.

The product of its digits is 1679616, while the sum is 52.

The square root of 2143349989 is about 46296.3280293373. The cubic root of 2143349989 is about 1289.3308207260.

The spelling of 2143349989 in words is "two billion, one hundred forty-three million, three hundred forty-nine thousand, nine hundred eighty-nine".