16989513 has 16 divisors (see below), whose sum is σ = 23383296. Its totient is φ = 10966400.

The previous prime is 16989491. The next prime is 16989523. The reversal of 16989513 is 31598961.

It is a cyclic number.

It is not a de Polignac number, because 16989513 - 2⁵ = 16989481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16989523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13645 + ... + 14837.

It is an arithmetic number, because the mean of its divisors is an integer number (1461456).

Almost surely, 2^16989513 is an apocalyptic number.

It is an amenable number.

16989513 is a deficient number, since it is larger than the sum of its proper divisors (6393783).

16989513 is a wasteful number, since it uses less digits than its factorization.

16989513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344.

The product of its digits is 58320, while the sum is 42.

The square root of 16989513 is about 4121.8336938795. The cubic root of 16989513 is about 257.0752755821.

It can be divided in two parts, 1698 and 9513, that added together give a palindrome (11211).

The spelling of 16989513 in words is "sixteen million, nine hundred eighty-nine thousand, five hundred thirteen".