165471912 has 192 divisors, whose sum is σ = 504504000. Its totient is φ = 48771072.

The previous prime is 165471851. The next prime is 165471967. The reversal of 165471912 is 219174561.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1705848 + ... + 1705944.

It is an arithmetic number, because the mean of its divisors is an integer number (2627625).

Almost surely, 2^165471912 is an apocalyptic number.

165471912 is a gapful number since it is divisible by the number (12) 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 165471912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252252000).

165471912 is an abundant number, since it is smaller than the sum of its proper divisors (339032088).

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

165471912 is a wasteful number, since it uses less digits than its factorization.

165471912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 193 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 165471912 is about 12863.5886128250. The cubic root of 165471912 is about 549.0030557127.

The spelling of 165471912 in words is "one hundred sixty-five million, four hundred seventy-one thousand, nine hundred twelve".