1085649305 has 8 divisors (see below), whose sum is σ = 1402993032. Its totient is φ = 801710208.

The previous prime is 1085649293. The next prime is 1085649343. The reversal of 1085649305 is 5039465801.

It can be written as a sum of positive squares in 4 ways, for example, as 24127744 + 1061521561 = 4912^2 + 32581^2 .

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

It is not a de Polignac number, because 1085649305 - 2⁶ = 1085649241 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, 8351084 + ... + 8351213.

It is an arithmetic number, because the mean of its divisors is an integer number (175374129).

Almost surely, 2^1085649305 is an apocalyptic number.

It is an amenable number.

1085649305 is a deficient number, since it is larger than the sum of its proper divisors (317343727).

1085649305 is a wasteful number, since it uses less digits than its factorization.

1085649305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16702315.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 1085649305 is about 32949.1927822215. The cubic root of 1085649305 is about 1027.7713792725.

The spelling of 1085649305 in words is "one billion, eighty-five million, six hundred forty-nine thousand, three hundred five".