2129449543 has 8 divisors (see below), whose sum is σ = 2327481968. Its totient is φ = 1936306944.

The previous prime is 2129449519. The next prime is 2129449573. The reversal of 2129449543 is 3459449212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2129449543 - 2⁹ = 2129449031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2129449543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129449573) 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 7 ways as a sum of consecutive naturals, for example, 1221546 + ... + 1223287.

It is an arithmetic number, because the mean of its divisors is an integer number (290935246).

Almost surely, 2^2129449543 is an apocalyptic number.

2129449543 is a deficient number, since it is larger than the sum of its proper divisors (198032425).

2129449543 is a wasteful number, since it uses less digits than its factorization.

2129449543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444913.

The product of its digits is 311040, while the sum is 43.

The square root of 2129449543 is about 46145.9591188654. The cubic root of 2129449543 is about 1286.5375052752.

The spelling of 2129449543 in words is "two billion, one hundred twenty-nine million, four hundred forty-nine thousand, five hundred forty-three".