1045643443 has 8 divisors (see below), whose sum is σ = 1131975936. Its totient is φ = 960153600.

The previous prime is 1045643387. The next prime is 1045643449. The reversal of 1045643443 is 3443465401.

1045643443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1045643443 - 2¹⁷ = 1045512371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1045643399 and 1045643408.

It is not an unprimeable number, because it can be changed into a prime (1045643449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208078 + ... + 213043.

It is an arithmetic number, because the mean of its divisors is an integer number (141496992).

Almost surely, 2^1045643443 is an apocalyptic number.

1045643443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1045643443 is a deficient number, since it is larger than the sum of its proper divisors (86332493).

1045643443 is a wasteful number, since it uses less digits than its factorization.

1045643443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421325.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 1045643443 is about 32336.4104841586. The cubic root of 1045643443 is about 1014.9886974887.

The spelling of 1045643443 in words is "one billion, forty-five million, six hundred forty-three thousand, four hundred forty-three".