165855732 has 48 divisors (see below), whose sum is σ = 443140992. Its totient is φ = 47295360.

The previous prime is 165855707. The next prime is 165855733. The reversal of 165855732 is 237558561.

165855732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165855733) 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, 49882 + ... + 53102.

It is an arithmetic number, because the mean of its divisors is an integer number (9232104).

Almost surely, 2^165855732 is an apocalyptic number.

165855732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165855732 is an abundant number, since it is smaller than the sum of its proper divisors (277285260).

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

165855732 is a wasteful number, since it uses less digits than its factorization.

165855732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848 (or 3846 counting only the distinct ones).

The product of its digits is 252000, while the sum is 42.

The square root of 165855732 is about 12878.4988255619. The cubic root of 165855732 is about 549.4272075344.

The spelling of 165855732 in words is "one hundred sixty-five million, eight hundred fifty-five thousand, seven hundred thirty-two".