1085342785 has 8 divisors (see below), whose sum is σ = 1307114856. Its totient is φ = 865138560.

The previous prime is 1085342779. The next prime is 1085342803. The reversal of 1085342785 is 5872435801.

It can be written as a sum of positive squares in 4 ways, for example, as 9437184 + 1075905601 = 3072^2 + 32801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1085342785 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390436 + ... + 393205.

It is an arithmetic number, because the mean of its divisors is an integer number (163389357).

Almost surely, 2^1085342785 is an apocalyptic number.

It is an amenable number.

1085342785 is a deficient number, since it is larger than the sum of its proper divisors (221772071).

1085342785 is an equidigital number, since it uses as much as digits as its factorization.

1085342785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783923.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 1085342785 is about 32944.5410500738. The cubic root of 1085342785 is about 1027.6746438795.

The spelling of 1085342785 in words is "one billion, eighty-five million, three hundred forty-two thousand, seven hundred eighty-five".