2143440445 has 8 divisors (see below), whose sum is σ = 2707503840. Its totient is φ = 1624502160.

The previous prime is 2143440421. The next prime is 2143440457. The reversal of 2143440445 is 5440443412.

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

It is not a de Polignac number, because 2143440445 - 2¹⁷ = 2143309373 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 11281171 + ... + 11281360.

It is an arithmetic number, because the mean of its divisors is an integer number (338437980).

Almost surely, 2^2143440445 is an apocalyptic number.

It is an amenable number.

2143440445 is a deficient number, since it is larger than the sum of its proper divisors (564063395).

2143440445 is a wasteful number, since it uses less digits than its factorization.

2143440445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22562555.

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 2143440445 is about 46297.3049431606. The cubic root of 2143440445 is about 1289.3489583872.

Adding to 2143440445 its reverse (5440443412), we get a palindrome (7583883857).

The spelling of 2143440445 in words is "two billion, one hundred forty-three million, four hundred forty thousand, four hundred forty-five".