165917934 has 48 divisors (see below), whose sum is σ = 442452192. Its totient is φ = 43758144.

The previous prime is 165917923. The next prime is 165917957. The reversal of 165917934 is 439719561.

It is a self number, because there is not a number n which added to its sum of digits gives 165917934.

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 23 ways as a sum of consecutive naturals, for example, 49009 + ... + 52284.

It is an arithmetic number, because the mean of its divisors is an integer number (9217754).

Almost surely, 2^165917934 is an apocalyptic number.

165917934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

165917934 is an abundant number, since it is smaller than the sum of its proper divisors (276534258).

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

165917934 is a wasteful number, since it uses less digits than its factorization.

165917934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101321 (or 101318 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 165917934 is about 12880.9135545582. The cubic root of 165917934 is about 549.4958840869.

The spelling of 165917934 in words is "one hundred sixty-five million, nine hundred seventeen thousand, nine hundred thirty-four".