16389653 has 4 divisors (see below), whose sum is σ = 18731040. Its totient is φ = 14048268.

The previous prime is 16389643. The next prime is 16389673. The reversal of 16389653 is 35698361.

16389653 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35698361 = 683 ⋅52267.

It is a cyclic number.

It is not a de Polignac number, because 16389653 - 2⁶ = 16389589 is a prime.

It is a Duffinian number.

16389653 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 16389653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16389613) 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, 1170683 + ... + 1170696.

It is an arithmetic number, because the mean of its divisors is an integer number (4682760).

Almost surely, 2^16389653 is an apocalyptic number.

It is an amenable number.

16389653 is a deficient number, since it is larger than the sum of its proper divisors (2341387).

16389653 is an equidigital number, since it uses as much as digits as its factorization.

16389653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341386.

The product of its digits is 116640, while the sum is 41.

The square root of 16389653 is about 4048.4136399335. The cubic root of 16389653 is about 254.0133758224.

The spelling of 16389653 in words is "sixteen million, three hundred eighty-nine thousand, six hundred fifty-three".