165381260 has 48 divisors (see below), whose sum is σ = 380685312. Its totient is φ = 59851200.

The previous prime is 165381257. The next prime is 165381277. The reversal of 165381260 is 62183561.

It is a happy number.

It is a super-2 number, since 2×165381260² = 54701922318375200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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, 47375 + ... + 50745.

It is an arithmetic number, because the mean of its divisors is an integer number (7930944).

Almost surely, 2^165381260 is an apocalyptic number.

165381260 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 165381260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190342656).

165381260 is an abundant number, since it is smaller than the sum of its proper divisors (215304052).

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

165381260 is a wasteful number, since it uses less digits than its factorization.

165381260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614 (or 3612 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 165381260 is about 12860.0645410511. The cubic root of 165381260 is about 548.9027822675.

The spelling of 165381260 in words is "one hundred sixty-five million, three hundred eighty-one thousand, two hundred sixty".