16818874 has 4 divisors (see below), whose sum is σ = 25228314. Its totient is φ = 8409436.

The previous prime is 16818853. The next prime is 16818889. The reversal of 16818874 is 47881861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47881861 = 47 ⋅1018763.

It can be written as a sum of positive squares in only one way, i.e., 14493249 + 2325625 = 3807^2 + 1525^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16818874.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4204717 + ... + 4204720.

Almost surely, 2^16818874 is an apocalyptic number.

16818874 is a deficient number, since it is larger than the sum of its proper divisors (8409440).

16818874 is an equidigital number, since it uses as much as digits as its factorization.

16818874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8409439.

The product of its digits is 86016, while the sum is 43.

The square root of 16818874 is about 4101.0820523369. The cubic root of 16818874 is about 256.2117084168.

The spelling of 16818874 in words is "sixteen million, eight hundred eighteen thousand, eight hundred seventy-four".