16813873 has 16 divisors (see below), whose sum is σ = 18123264. Its totient is φ = 15569280.

The previous prime is 16813861. The next prime is 16813877. The reversal of 16813873 is 37831861.

It is a cyclic number.

It is not a de Polignac number, because 16813873 - 2⁹ = 16813361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16813877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122661 + ... + 122797.

It is an arithmetic number, because the mean of its divisors is an integer number (1132704).

Almost surely, 2^16813873 is an apocalyptic number.

It is an amenable number.

16813873 is a deficient number, since it is larger than the sum of its proper divisors (1309391).

16813873 is a wasteful number, since it uses less digits than its factorization.

16813873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its digits is 24192, while the sum is 37.

The square root of 16813873 is about 4100.4722898710. The cubic root of 16813873 is about 256.1863115170.

It can be divided in two parts, 168 and 13873, that added together give a palindrome (14041).

The spelling of 16813873 in words is "sixteen million, eight hundred thirteen thousand, eight hundred seventy-three".