165193908 has 48 divisors (see below), whose sum is σ = 429456384. Its totient is φ = 48991840.

The previous prime is 165193901. The next prime is 165193921. The reversal of 165193908 is 809391561.

It is a self number, because there is not a number n which added to its sum of digits gives 165193908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165193901) by changing a digit.

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, 7110 + ... + 19517.

It is an arithmetic number, because the mean of its divisors is an integer number (8947008).

Almost surely, 2^165193908 is an apocalyptic number.

It is an amenable number.

165193908 is an abundant number, since it is smaller than the sum of its proper divisors (264262476).

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

165193908 is a wasteful number, since it uses less digits than its factorization.

165193908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26692 (or 26690 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 165193908 is about 12852.7782210696. The cubic root of 165193908 is about 548.6954292864.

It can be divided in two parts, 1651 and 93908, that added together give a palindrome (95559).

The spelling of 165193908 in words is "one hundred sixty-five million, one hundred ninety-three thousand, nine hundred eight".