1085512860 has 96 divisors (see below), whose sum is σ = 3408894720. Its totient is φ = 286749504.

The previous prime is 1085512811. The next prime is 1085512861. The reversal of 1085512860 is 682155801.

1085512860 is a `hidden beast` number, since 1 + 0 + 85 + 512 + 8 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085512861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48387 + ... + 67173.

It is an arithmetic number, because the mean of its divisors is an integer number (35509320).

Almost surely, 2^1085512860 is an apocalyptic number.

1085512860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1085512860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1704447360).

1085512860 is an abundant number, since it is smaller than the sum of its proper divisors (2323381860).

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

1085512860 is a wasteful number, since it uses less digits than its factorization.

1085512860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18912 (or 18904 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 1085512860 is about 32947.1221808522. The cubic root of 1085512860 is about 1027.7283205117.

The spelling of 1085512860 in words is "one billion, eighty-five million, five hundred twelve thousand, eight hundred sixty".