16813385 has 8 divisors (see below), whose sum is σ = 21238080. Its totient is φ = 12742704.

The previous prime is 16813373. The next prime is 16813399. The reversal of 16813385 is 58331861.

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 16813385 - 2¹⁰ = 16812361 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88397 + ... + 88586.

It is an arithmetic number, because the mean of its divisors is an integer number (2654760).

Almost surely, 2^16813385 is an apocalyptic number.

It is an amenable number.

16813385 is a deficient number, since it is larger than the sum of its proper divisors (4424695).

16813385 is a wasteful number, since it uses less digits than its factorization.

16813385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177007.

The product of its digits is 17280, while the sum is 35.

The square root of 16813385 is about 4100.4127840987. The cubic root of 16813385 is about 256.1838330055.

The spelling of 16813385 in words is "sixteen million, eight hundred thirteen thousand, three hundred eighty-five".