16165423 has 4 divisors (see below), whose sum is σ = 16192408. Its totient is φ = 16138440.

The previous prime is 16165403. The next prime is 16165483. The reversal of 16165423 is 32456161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32456161 = 19 ⋅1708219.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16165423 is a prime.

It is a super-2 number, since 2×16165423² = 522641801537858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16165391 and 16165400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16165403) 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, 12573 + ... + 13798.

It is an arithmetic number, because the mean of its divisors is an integer number (4048102).

Almost surely, 2^16165423 is an apocalyptic number.

16165423 is a deficient number, since it is larger than the sum of its proper divisors (26985).

16165423 is an equidigital number, since it uses as much as digits as its factorization.

16165423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26984.

The product of its digits is 4320, while the sum is 28.

The square root of 16165423 is about 4020.6247027048. The cubic root of 16165423 is about 252.8496505504.

The spelling of 16165423 in words is "sixteen million, one hundred sixty-five thousand, four hundred twenty-three".