165146 has 8 divisors (see below), whose sum is σ = 251424. Its totient is φ = 81340.

The previous prime is 165133. The next prime is 165161. The reversal of 165146 is 641561.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440 + ... + 723.

It is an arithmetic number, because the mean of its divisors is an integer number (31428).

2¹⁶⁵¹⁴⁶ is an apocalyptic number.

165146 is a deficient number, since it is larger than the sum of its proper divisors (86278).

165146 is a wasteful number, since it uses less digits than its factorization.

165146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its digits is 720, while the sum is 23.

The square root of 165146 is about 406.3815940714. The cubic root of 165146 is about 54.8642381644.

It can be divided in two parts, 165 and 146, that multiplied together give a triangular number (24090 = T₂₁₉).

The spelling of 165146 in words is "one hundred sixty-five thousand, one hundred forty-six".