165346212 has 12 divisors (see below), whose sum is σ = 385807856. Its totient is φ = 55115400.

The previous prime is 165346201. The next prime is 165346213. The reversal of 165346212 is 212643561.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 165346212.

It is not an unprimeable number, because it can be changed into a prime (165346213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6889414 + ... + 6889437.

Almost surely, 2^165346212 is an apocalyptic number.

165346212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165346212 is an abundant number, since it is smaller than the sum of its proper divisors (220461644).

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

165346212 is a wasteful number, since it uses less digits than its factorization.

165346212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13778858 (or 13778856 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 165346212 is about 12858.7018007262. The cubic root of 165346212 is about 548.8640045893.

Adding to 165346212 its reverse (212643561), we get a palindrome (377989773).

The spelling of 165346212 in words is "one hundred sixty-five million, three hundred forty-six thousand, two hundred twelve".