165746733 has 8 divisors (see below), whose sum is σ = 221060928. Its totient is φ = 110465184.

The previous prime is 165746729. The next prime is 165746743. The reversal of 165746733 is 337647561.

It is a happy number.

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

It is not a de Polignac number, because 165746733 - 2² = 165746729 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165746743) 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, 8616 + ... + 20142.

It is an arithmetic number, because the mean of its divisors is an integer number (27632616).

Almost surely, 2^165746733 is an apocalyptic number.

It is an amenable number.

165746733 is a deficient number, since it is larger than the sum of its proper divisors (55314195).

165746733 is a wasteful number, since it uses less digits than its factorization.

165746733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16323.

The product of its digits is 317520, while the sum is 42.

The square root of 165746733 is about 12874.2663091921. The cubic root of 165746733 is about 549.3068215030.

The spelling of 165746733 in words is "one hundred sixty-five million, seven hundred forty-six thousand, seven hundred thirty-three".