1943041445 has 4 divisors (see below), whose sum is σ = 2331649740. Its totient is φ = 1554433152.

The previous prime is 1943041439. The next prime is 1943041447. The reversal of 1943041445 is 5441403491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1217870404 + 725171041 = 34898^2 + 26929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1943041445 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1943041447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194304140 + ... + 194304149.

It is an arithmetic number, because the mean of its divisors is an integer number (582912435).

Almost surely, 2^1943041445 is an apocalyptic number.

It is an amenable number.

1943041445 is a deficient number, since it is larger than the sum of its proper divisors (388608295).

1943041445 is an equidigital number, since it uses as much as digits as its factorization.

1943041445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388608294.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1943041445 is about 44079.9437953362. The cubic root of 1943041445 is about 1247.8451289593.

The spelling of 1943041445 in words is "one billion, nine hundred forty-three million, forty-one thousand, four hundred forty-five".