165159210 has 64 divisors (see below), whose sum is σ = 422392320. Its totient is φ = 41209920.

The previous prime is 165159209. The next prime is 165159257. The reversal of 165159210 is 12951561.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 45565 + ... + 49055.

It is an arithmetic number, because the mean of its divisors is an integer number (6599880).

Almost surely, 2^165159210 is an apocalyptic number.

165159210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 165159210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211196160).

165159210 is an abundant number, since it is smaller than the sum of its proper divisors (257233110).

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

165159210 is a wasteful number, since it uses less digits than its factorization.

165159210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603.

The product of its (nonzero) digits is 2700, while the sum is 30.

The square root of 165159210 is about 12851.4283252874. The cubic root of 165159210 is about 548.6570098568.

The spelling of 165159210 in words is "one hundred sixty-five million, one hundred fifty-nine thousand, two hundred ten".