165163839 has 4 divisors (see below), whose sum is σ = 220218456. Its totient is φ = 110109224.

The previous prime is 165163829. The next prime is 165163849. The reversal of 165163839 is 938361561.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (165163829) and next prime (165163849).

It is a cyclic number.

It is not a de Polignac number, because 165163839 - 2⁷ = 165163711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165163839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165163829) 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, 27527304 + ... + 27527309.

It is an arithmetic number, because the mean of its divisors is an integer number (55054614).

Almost surely, 2^165163839 is an apocalyptic number.

165163839 is a deficient number, since it is larger than the sum of its proper divisors (55054617).

165163839 is an equidigital number, since it uses as much as digits as its factorization.

165163839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55054616.

The product of its digits is 116640, while the sum is 42.

The square root of 165163839 is about 12851.6084207386. The cubic root of 165163839 is about 548.6621356373.

The spelling of 165163839 in words is "one hundred sixty-five million, one hundred sixty-three thousand, eight hundred thirty-nine".