165144023 has 8 divisors (see below), whose sum is σ = 184551696. Its totient is φ = 146468800.

The previous prime is 165144017. The next prime is 165144043. The reversal of 165144023 is 320441561.

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 165144023 - 2⁶ = 165143959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165143983 and 165144001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165144013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182636 + ... + 183537.

It is an arithmetic number, because the mean of its divisors is an integer number (23068962).

Almost surely, 2^165144023 is an apocalyptic number.

165144023 is a deficient number, since it is larger than the sum of its proper divisors (19407673).

165144023 is a wasteful number, since it uses less digits than its factorization.

165144023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366225.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 165144023 is about 12850.8374435287. The cubic root of 165144023 is about 548.6401923278.

Adding to 165144023 its reverse (320441561), we get a palindrome (485585584).

The spelling of 165144023 in words is "one hundred sixty-five million, one hundred forty-four thousand, twenty-three".