2043723189 has 4 divisors (see below), whose sum is σ = 2724964256. Its totient is φ = 1362482124.

The previous prime is 2043723173. The next prime is 2043723197. The reversal of 2043723189 is 9813273402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2043723189 - 2⁴ = 2043723173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043723169) 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 3 ways as a sum of consecutive naturals, for example, 340620529 + ... + 340620534.

It is an arithmetic number, because the mean of its divisors is an integer number (681241064).

Almost surely, 2^2043723189 is an apocalyptic number.

It is an amenable number.

2043723189 is a deficient number, since it is larger than the sum of its proper divisors (681241067).

2043723189 is an equidigital number, since it uses as much as digits as its factorization.

2043723189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681241066.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 2043723189 is about 45207.5567687527. The cubic root of 2043723189 is about 1269.0362392864.

The spelling of 2043723189 in words is "two billion, forty-three million, seven hundred twenty-three thousand, one hundred eighty-nine".