1085447916 has 72 divisors (see below), whose sum is σ = 3171036960. Its totient is φ = 306637056.

The previous prime is 1085447893. The next prime is 1085447921. The reversal of 1085447916 is 6197445801.

1085447916 is a `hidden beast` number, since 10 + 8 + 544 + 7 + 91 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1771 + ... + 46626.

It is an arithmetic number, because the mean of its divisors is an integer number (44042180).

Almost surely, 2^1085447916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1085447916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1585518480).

1085447916 is an abundant number, since it is smaller than the sum of its proper divisors (2085589044).

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

1085447916 is a wasteful number, since it uses less digits than its factorization.

1085447916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48503 (or 48498 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1085447916 is about 32946.1365868595. The cubic root of 1085447916 is about 1027.7078244796.

The spelling of 1085447916 in words is "one billion, eighty-five million, four hundred forty-seven thousand, nine hundred sixteen".