165666150 has 72 divisors (see below), whose sum is σ = 479344320. Its totient is φ = 40777920.

The previous prime is 165666133. The next prime is 165666161. The reversal of 165666150 is 51666561.

165666150 = T₃₆₂₈ + T₃₆₂₉ + ... + T₃₆₅₂.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8310 + ... + 20009.

It is an arithmetic number, because the mean of its divisors is an integer number (6657560).

Almost surely, 2^165666150 is an apocalyptic number.

165666150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165666150 is an abundant number, since it is smaller than the sum of its proper divisors (313678170).

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

165666150 is a wasteful number, since it uses less digits than its factorization.

165666150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28350 (or 28342 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 165666150 is about 12871.1363134729. The cubic root of 165666150 is about 549.2177861289.

The spelling of 165666150 in words is "one hundred sixty-five million, six hundred sixty-six thousand, one hundred fifty".