165861160 has 64 divisors (see below), whose sum is σ = 387878400. Its totient is φ = 63763200.

The previous prime is 165861133. The next prime is 165861169. The reversal of 165861160 is 61168561.

165861160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165861169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224071 + ... + 224809.

It is an arithmetic number, because the mean of its divisors is an integer number (6060600).

Almost surely, 2^165861160 is an apocalyptic number.

165861160 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 165861160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193939200).

165861160 is an abundant number, since it is smaller than the sum of its proper divisors (222017240).

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

165861160 is a wasteful number, since it uses less digits than its factorization.

165861160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 165861160 is about 12878.7095626852. The cubic root of 165861160 is about 549.4332012140.

The spelling of 165861160 in words is "one hundred sixty-five million, eight hundred sixty-one thousand, one hundred sixty".