16813489 has 8 divisors (see below), whose sum is σ = 20962368. Its totient is φ = 13101360.

The previous prime is 16813481. The next prime is 16813507. The reversal of 16813489 is 98431861.

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

It is a cyclic number.

It is not a de Polignac number, because 16813489 - 2³ = 16813481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16813481) 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, 109102 + ... + 109255.

It is an arithmetic number, because the mean of its divisors is an integer number (2620296).

Almost surely, 2^16813489 is an apocalyptic number.

It is an amenable number.

16813489 is a deficient number, since it is larger than the sum of its proper divisors (4148879).

16813489 is a wasteful number, since it uses less digits than its factorization.

16813489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218375.

The product of its digits is 41472, while the sum is 40.

The square root of 16813489 is about 4100.4254657291. The cubic root of 16813489 is about 256.1843612169.

The spelling of 16813489 in words is "sixteen million, eight hundred thirteen thousand, four hundred eighty-nine".