1085845128 has 32 divisors (see below), whose sum is σ = 2716546560. Its totient is φ = 361690560.

The previous prime is 1085845121. The next prime is 1085845129. The reversal of 1085845128 is 8215485801.

It is a self number, because there is not a number n which added to its sum of digits gives 1085845128.

It is not an unprimeable number, because it can be changed into a prime (1085845121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19926 + ... + 50682.

It is an arithmetic number, because the mean of its divisors is an integer number (84892080).

Almost surely, 2^1085845128 is an apocalyptic number.

It is an amenable number.

1085845128 is an abundant number, since it is smaller than the sum of its proper divisors (1630701432).

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

1085845128 is a wasteful number, since it uses less digits than its factorization.

1085845128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32237 (or 32233 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 42.

The square root of 1085845128 is about 32952.1642384836. The cubic root of 1085845128 is about 1027.8331699982.

The spelling of 1085845128 in words is "one billion, eighty-five million, eight hundred forty-five thousand, one hundred twenty-eight".