165148212 has 24 divisors (see below), whose sum is σ = 392618016. Its totient is φ = 54010528.

The previous prime is 165148169. The next prime is 165148259. The reversal of 165148212 is 212841561.

It is a self number, because there is not a number n which added to its sum of digits gives 165148212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129198 + ... + 130469.

It is an arithmetic number, because the mean of its divisors is an integer number (16359084).

Almost surely, 2^165148212 is an apocalyptic number.

165148212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165148212 is an abundant number, since it is smaller than the sum of its proper divisors (227469804).

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

165148212 is a wasteful number, since it uses less digits than its factorization.

165148212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259727 (or 259725 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The square root of 165148212 is about 12851.0004279823. Note that the first 3 decimals coincide. The cubic root of 165148212 is about 548.6448311764.

Adding to 165148212 its reverse (212841561), we get a palindrome (377989773).

The spelling of 165148212 in words is "one hundred sixty-five million, one hundred forty-eight thousand, two hundred twelve".