1043990563 has 16 divisors (see below), whose sum is σ = 1306324224. Its totient is φ = 810545760.

The previous prime is 1043990537. The next prime is 1043990569. The reversal of 1043990563 is 3650993401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1043990563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043990569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3145 + ... + 45802.

It is an arithmetic number, because the mean of its divisors is an integer number (81645264).

Almost surely, 2^1043990563 is an apocalyptic number.

1043990563 is a deficient number, since it is larger than the sum of its proper divisors (262333661).

1043990563 is a wasteful number, since it uses less digits than its factorization.

1043990563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49242.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 1043990563 is about 32310.8428085681. The cubic root of 1043990563 is about 1014.4536077378.

The spelling of 1043990563 in words is "one billion, forty-three million, nine hundred ninety thousand, five hundred sixty-three".