1085985568 has 24 divisors (see below), whose sum is σ = 2263801932. Its totient is φ = 511051776.

The previous prime is 1085985553. The next prime is 1085985577. The reversal of 1085985568 is 8655895801.

It can be written as a sum of positive squares in 2 ways, for example, as 1084516624 + 1468944 = 32932^2 + 1212^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997605 + ... + 998692.

Almost surely, 2^1085985568 is an apocalyptic number.

It is an amenable number.

1085985568 is an abundant number, since it is smaller than the sum of its proper divisors (1177816364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1085985568 is a wasteful number, since it uses less digits than its factorization.

1085985568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996324 (or 1996316 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 55.

The square root of 1085985568 is about 32954.2951373565. The cubic root of 1085985568 is about 1027.8774803895.

The spelling of 1085985568 in words is "one billion, eighty-five million, nine hundred eighty-five thousand, five hundred sixty-eight".