1085718789 has 16 divisors (see below), whose sum is σ = 1610135040. Its totient is φ = 723064320.

The previous prime is 1085718773. The next prime is 1085718793. The reversal of 1085718789 is 9878175801.

It is not a de Polignac number, because 1085718789 - 2⁴ = 1085718773 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 (1085710789) 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 15 ways as a sum of consecutive naturals, for example, 6469 + ... + 47045.

It is an arithmetic number, because the mean of its divisors is an integer number (100633440).

Almost surely, 2^1085718789 is an apocalyptic number.

It is an amenable number.

1085718789 is a deficient number, since it is larger than the sum of its proper divisors (524416251).

1085718789 is an equidigital number, since it uses as much as digits as its factorization.

1085718789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41577 (or 41571 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 54.

The square root of 1085718789 is about 32950.2471766146. The cubic root of 1085718789 is about 1027.7933053655.

It can be divided in two parts, 10857 and 18789, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 1085718789 in words is "one billion, eighty-five million, seven hundred eighteen thousand, seven hundred eighty-nine".