165191316 has 24 divisors (see below), whose sum is σ = 387469824. Its totient is φ = 54774720.

The previous prime is 165191311. The next prime is 165191437. The reversal of 165191316 is 613191561.

165191316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165191311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33745 + ... + 38328.

It is an arithmetic number, because the mean of its divisors is an integer number (16144576).

Almost surely, 2^165191316 is an apocalyptic number.

It is an amenable number.

165191316 is an abundant number, since it is smaller than the sum of its proper divisors (222278508).

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

165191316 is a wasteful number, since it uses less digits than its factorization.

165191316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72271 (or 72269 counting only the distinct ones).

The product of its digits is 4860, while the sum is 33.

The square root of 165191316 is about 12852.6773864437. The cubic root of 165191316 is about 548.6925594752.

The spelling of 165191316 in words is "one hundred sixty-five million, one hundred ninety-one thousand, three hundred sixteen".