165985230 has 16 divisors (see below), whose sum is σ = 398364624. Its totient is φ = 44262720.

The previous prime is 165985217. The next prime is 165985277. The reversal of 165985230 is 32589561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2766391 + ... + 2766450.

It is an arithmetic number, because the mean of its divisors is an integer number (24897789).

Almost surely, 2^165985230 is an apocalyptic number.

165985230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165985230 is an abundant number, since it is smaller than the sum of its proper divisors (232379394).

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

165985230 is a wasteful number, since it uses less digits than its factorization.

165985230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532851.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 165985230 is about 12883.5255268114. The cubic root of 165985230 is about 549.5701655419.

The spelling of 165985230 in words is "one hundred sixty-five million, nine hundred eighty-five thousand, two hundred thirty".