16386139 has 32 divisors (see below), whose sum is σ = 21542400. Its totient is φ = 12348000.

The previous prime is 16386137. The next prime is 16386163. The reversal of 16386139 is 93168361.

16386139 is nontrivially palindromic in base 6.

16386139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16386139 - 2¹ = 16386137 is a prime.

Its product of digits (23328) is a multiple of the sum of its prime divisors (162).

It is a junction number, because it is equal to n+sod(n) for n = 16386098 and 16386107.

It is not an unprimeable number, because it can be changed into a prime (16386137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162189 + ... + 162289.

It is an arithmetic number, because the mean of its divisors is an integer number (673200).

Almost surely, 2^16386139 is an apocalyptic number.

16386139 is a deficient number, since it is larger than the sum of its proper divisors (5156261).

16386139 is a wasteful number, since it uses less digits than its factorization.

16386139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 162 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 16386139 is about 4047.9796195139. The cubic root of 16386139 is about 253.9952207338.

It can be divided in two parts, 1638 and 6139, that added together give a palindrome (7777).

The spelling of 16386139 in words is "sixteen million, three hundred eighty-six thousand, one hundred thirty-nine".