16105389 has 8 divisors (see below), whose sum is σ = 21682752. Its totient is φ = 10632480.

The previous prime is 16105387. The next prime is 16105421. The reversal of 16105389 is 98350161.

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

It is not a de Polignac number, because 16105389 - 2¹ = 16105387 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16105387) 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, 25752 + ... + 26369.

It is an arithmetic number, because the mean of its divisors is an integer number (2710344).

Almost surely, 2^16105389 is an apocalyptic number.

It is an amenable number.

16105389 is a deficient number, since it is larger than the sum of its proper divisors (5577363).

16105389 is a wasteful number, since it uses less digits than its factorization.

16105389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52227.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 16105389 is about 4013.1520031018. The cubic root of 16105389 is about 252.5362572514.

The spelling of 16105389 in words is "sixteen million, one hundred five thousand, three hundred eighty-nine".