1089031643 has 16 divisors (see below), whose sum is σ = 1291462656. Its totient is φ = 898629120.

The previous prime is 1089031639. The next prime is 1089031649. The reversal of 1089031643 is 3461309801.

It is a cyclic number.

It is not a de Polignac number, because 1089031643 - 2² = 1089031639 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089031649) 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, 28880 + ... + 54882.

It is an arithmetic number, because the mean of its divisors is an integer number (80716416).

Almost surely, 2^1089031643 is an apocalyptic number.

1089031643 is a deficient number, since it is larger than the sum of its proper divisors (202431013).

1089031643 is a wasteful number, since it uses less digits than its factorization.

1089031643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26234.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 1089031643 is about 33000.4794359112. The cubic root of 1089031643 is about 1028.8376125723.

The spelling of 1089031643 in words is "one billion, eighty-nine million, thirty-one thousand, six hundred forty-three".