16818146 has 4 divisors (see below), whose sum is σ = 25227222. Its totient is φ = 8409072.

The previous prime is 16818133. The next prime is 16818157. The reversal of 16818146 is 64181861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64181861 = 7669 ⋅8369.

It can be written as a sum of positive squares in only one way, i.e., 16605625 + 212521 = 4075^2 + 461^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4204535 + ... + 4204538.

Almost surely, 2^16818146 is an apocalyptic number.

16818146 is a deficient number, since it is larger than the sum of its proper divisors (8409076).

16818146 is an equidigital number, since it uses as much as digits as its factorization.

16818146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8409075.

The product of its digits is 9216, while the sum is 35.

The square root of 16818146 is about 4100.9932943130. The cubic root of 16818146 is about 256.2080116807.

The spelling of 16818146 in words is "sixteen million, eight hundred eighteen thousand, one hundred forty-six".