1065939812 has 48 divisors (see below), whose sum is σ = 2189109888. Its totient is φ = 444622080.

The previous prime is 1065939781. The next prime is 1065939821. The reversal of 1065939812 is 2189395601.

It is a happy number.

It is a super-2 number, since 2×1065939812² = 2272455365613190688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638603 + ... + 640269.

It is an arithmetic number, because the mean of its divisors is an integer number (45606456).

Almost surely, 2^1065939812 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 1065939812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1094554944).

1065939812 is an abundant number, since it is smaller than the sum of its proper divisors (1123170076).

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

1065939812 is a wasteful number, since it uses less digits than its factorization.

1065939812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276 (or 2274 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1065939812 is about 32648.7336967301. The cubic root of 1065939812 is about 1021.5137756280.

The spelling of 1065939812 in words is "one billion, sixty-five million, nine hundred thirty-nine thousand, eight hundred twelve".