165820002 has 8 divisors (see below), whose sum is σ = 331640016. Its totient is φ = 55273332.

The previous prime is 165820001. The next prime is 165820007. The reversal of 165820002 is 200028561.

It is a sphenic number, since it is the product of 3 distinct primes.

165820002 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (165820001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13818328 + ... + 13818339.

It is an arithmetic number, because the mean of its divisors is an integer number (41455002).

Almost surely, 2^165820002 is an apocalyptic number.

165820002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

165820002 is a wasteful number, since it uses less digits than its factorization.

165820002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27636672.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 165820002 is about 12877.1115550033. Note that the first 3 decimals coincide. The cubic root of 165820002 is about 549.3877506647.

Adding to 165820002 its reverse (200028561), we get a palindrome (365848563).

The spelling of 165820002 in words is "one hundred sixty-five million, eight hundred twenty thousand, two".