1085211960 has 128 divisors (see below), whose sum is σ = 3781900800. Its totient is φ = 243970560.

The previous prime is 1085211901. The next prime is 1085211971. The reversal of 1085211960 is 691125801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40651 + ... + 61829.

It is an arithmetic number, because the mean of its divisors is an integer number (29546100).

Almost surely, 2^1085211960 is an apocalyptic number.

1085211960 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 1085211960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890950400).

1085211960 is an abundant number, since it is smaller than the sum of its proper divisors (2696688840).

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

1085211960 is a wasteful number, since it uses less digits than its factorization.

1085211960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21261 (or 21257 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 1085211960 is about 32942.5554564305. Note that the first 3 decimals coincide. The cubic root of 1085211960 is about 1027.6333509536.

The spelling of 1085211960 in words is "one billion, eighty-five million, two hundred eleven thousand, nine hundred sixty".