165293943 has 4 divisors (see below), whose sum is σ = 220391928. Its totient is φ = 110195960.

The previous prime is 165293927. The next prime is 165293951. The reversal of 165293943 is 349392561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165293943 - 2⁴ = 165293927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165293895 and 165293904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165293963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27548988 + ... + 27548993.

It is an arithmetic number, because the mean of its divisors is an integer number (55097982).

Almost surely, 2^165293943 is an apocalyptic number.

165293943 is a deficient number, since it is larger than the sum of its proper divisors (55097985).

165293943 is an equidigital number, since it uses as much as digits as its factorization.

165293943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55097984.

The product of its digits is 174960, while the sum is 42.

The square root of 165293943 is about 12856.6692031801. The cubic root of 165293943 is about 548.8061631348.

The spelling of 165293943 in words is "one hundred sixty-five million, two hundred ninety-three thousand, nine hundred forty-three".