1085289043 has 4 divisors (see below), whose sum is σ = 1090070280. Its totient is φ = 1080507808.

The previous prime is 1085288933. The next prime is 1085289053. The reversal of 1085289043 is 3409825801.

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

It is a cyclic number.

It is not a de Polignac number, because 1085289043 - 2¹⁷ = 1085157971 is a prime.

It is a Smith number, since the sum of its digits (40) 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 a junction number, because it is equal to n+sod(n) for n = 1085288987 and 1085289005.

It is not an unprimeable number, because it can be changed into a prime (1085289053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2390278 + ... + 2390731.

It is an arithmetic number, because the mean of its divisors is an integer number (272517570).

Almost surely, 2^1085289043 is an apocalyptic number.

1085289043 is a deficient number, since it is larger than the sum of its proper divisors (4781237).

1085289043 is an equidigital number, since it uses as much as digits as its factorization.

1085289043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4781236.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 1085289043 is about 32943.7253965000. The cubic root of 1085289043 is about 1027.6576814344.

The spelling of 1085289043 in words is "one billion, eighty-five million, two hundred eighty-nine thousand, forty-three".