16489518 has 8 divisors (see below), whose sum is σ = 32979048. Its totient is φ = 5496504.

The previous prime is 16489513. The next prime is 16489523. The reversal of 16489518 is 81598461.

It is an interprime number because it is at equal distance from previous prime (16489513) and next prime (16489523).

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

16489518 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 16489518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16489513) 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, 1374121 + ... + 1374132.

It is an arithmetic number, because the mean of its divisors is an integer number (4122381).

Almost surely, 2^16489518 is an apocalyptic number.

16489518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16489518 is a wasteful number, since it uses less digits than its factorization.

16489518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748258.

The product of its digits is 69120, while the sum is 42.

The square root of 16489518 is about 4060.7287523301. The cubic root of 16489518 is about 254.5282473603.

The spelling of 16489518 in words is "sixteen million, four hundred eighty-nine thousand, five hundred eighteen".