165169530 has 112 divisors (see below), whose sum is σ = 451715040. Its totient is φ = 43460064.

The previous prime is 165169507. The next prime is 165169541. The reversal of 165169530 is 35961561.

165169530 is a `hidden beast` number, since 1 + 65 + 1 + 69 + 530 = 666.

165169530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1013229 + ... + 1013391.

It is an arithmetic number, because the mean of its divisors is an integer number (4033170).

Almost surely, 2^165169530 is an apocalyptic number.

165169530 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 165169530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225857520).

165169530 is an abundant number, since it is smaller than the sum of its proper divisors (286545510).

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

165169530 is a wasteful number, since it uses less digits than its factorization.

165169530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 165169530 is about 12851.8298308062. The cubic root of 165169530 is about 548.6684372596.

The spelling of 165169530 in words is "one hundred sixty-five million, one hundred sixty-nine thousand, five hundred thirty".