165964733 has 4 divisors (see below), whose sum is σ = 181052448. Its totient is φ = 150877020.

The previous prime is 165964703. The next prime is 165964759. The reversal of 165964733 is 337469561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165964733 - 2¹⁰ = 165963709 is a prime.

It is a super-2 number, since 2×165964733² = 55088585199522578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165964703) by changing a digit.

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, 7543841 + ... + 7543862.

It is an arithmetic number, because the mean of its divisors is an integer number (45263112).

Almost surely, 2^165964733 is an apocalyptic number.

It is an amenable number.

165964733 is a deficient number, since it is larger than the sum of its proper divisors (15087715).

165964733 is a wasteful number, since it uses less digits than its factorization.

165964733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15087714.

The product of its digits is 408240, while the sum is 44.

The square root of 165964733 is about 12882.7300289962. The cubic root of 165964733 is about 549.5475430403.

The spelling of 165964733 in words is "one hundred sixty-five million, nine hundred sixty-four thousand, seven hundred thirty-three".