165549160 has 64 divisors (see below), whose sum is σ = 426827520. Its totient is φ = 56609280.

The previous prime is 165549151. The next prime is 165549169. The reversal of 165549160 is 61945561.

It is an interprime number because it is at equal distance from previous prime (165549151) and next prime (165549169).

It is not an unprimeable number, because it can be changed into a prime (165549169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176212 + ... + 177148.

It is an arithmetic number, because the mean of its divisors is an integer number (6669180).

Almost surely, 2^165549160 is an apocalyptic number.

165549160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165549160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213413760).

165549160 is an abundant number, since it is smaller than the sum of its proper divisors (261278360).

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

165549160 is a wasteful number, since it uses less digits than its factorization.

165549160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586 (or 1582 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 165549160 is about 12866.5908460633. The cubic root of 165549160 is about 549.0884736141.

The spelling of 165549160 in words is "one hundred sixty-five million, five hundred forty-nine thousand, one hundred sixty".