165530743 has 8 divisors (see below), whose sum is σ = 189777312. Its totient is φ = 141434016.

The previous prime is 165530737. The next prime is 165530797. The reversal of 165530743 is 347035561.

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

It is a cyclic number.

It is not a de Polignac number, because 165530743 - 2¹⁷ = 165399671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165530699 and 165530708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165536743) 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, 35080 + ... + 39517.

It is an arithmetic number, because the mean of its divisors is an integer number (23722164).

Almost surely, 2^165530743 is an apocalyptic number.

165530743 is a deficient number, since it is larger than the sum of its proper divisors (24246569).

165530743 is an equidigital number, since it uses as much as digits as its factorization.

165530743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74921.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 165530743 is about 12865.8751354115. The cubic root of 165530743 is about 549.0681112085.

The spelling of 165530743 in words is "one hundred sixty-five million, five hundred thirty thousand, seven hundred forty-three".