165820482 has 48 divisors (see below), whose sum is σ = 389719512. Its totient is φ = 50749440.

The previous prime is 165820451. The next prime is 165820483. The reversal of 165820482 is 284028561.

It can be written as a sum of positive squares in 4 ways, for example, as 116834481 + 48986001 = 10809^2 + 6999^2 .

It is not an unprimeable number, because it can be changed into a prime (165820483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5938 + ... + 19154.

Almost surely, 2^165820482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165820482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194859756).

165820482 is an abundant number, since it is smaller than the sum of its proper divisors (223899030).

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

165820482 is a wasteful number, since it uses less digits than its factorization.

165820482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13283 (or 13280 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 165820482 is about 12877.1301927099. The cubic root of 165820482 is about 549.3882807694.

The spelling of 165820482 in words is "one hundred sixty-five million, eight hundred twenty thousand, four hundred eighty-two".