165917946 has 8 divisors (see below), whose sum is σ = 331835904. Its totient is φ = 55305980.

The previous prime is 165917923. The next prime is 165917957. The reversal of 165917946 is 649719561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

165917946 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 165917895 and 165917904.

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 3 ways as a sum of consecutive naturals, for example, 13826490 + ... + 13826501.

It is an arithmetic number, because the mean of its divisors is an integer number (41479488).

Almost surely, 2^165917946 is an apocalyptic number.

165917946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

165917946 is a wasteful number, since it uses less digits than its factorization.

165917946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27652996.

The product of its digits is 408240, while the sum is 48.

The square root of 165917946 is about 12880.9140203636. The cubic root of 165917946 is about 549.4958973344.

The spelling of 165917946 in words is "one hundred sixty-five million, nine hundred seventeen thousand, nine hundred forty-six".