1043331645 has 16 divisors (see below), whose sum is σ = 1670643072. Its totient is φ = 556006080.

The previous prime is 1043331623. The next prime is 1043331649. The reversal of 1043331645 is 5461333401.

It is not a de Polignac number, because 1043331645 - 2¹⁰ = 1043330621 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 (1043331649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7146 + ... + 46235.

It is an arithmetic number, because the mean of its divisors is an integer number (104415192).

Almost surely, 2^1043331645 is an apocalyptic number.

1043331645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1043331645 is a deficient number, since it is larger than the sum of its proper divisors (627311427).

1043331645 is a wasteful number, since it uses less digits than its factorization.

1043331645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54692.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 1043331645 is about 32300.6446530096. The cubic root of 1043331645 is about 1014.2401376022.

The spelling of 1043331645 in words is "one billion, forty-three million, three hundred thirty-one thousand, six hundred forty-five".