16418331 has 6 divisors (see below), whose sum is σ = 23715380. Its totient is φ = 10945548.

The previous prime is 16418323. The next prime is 16418351. The reversal of 16418331 is 13381461.

It is not a de Polignac number, because 16418331 - 2³ = 16418323 is a prime.

It is a super-2 number, since 2×16418331² = 539123185651122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16418295 and 16418304.

It is not an unprimeable number, because it can be changed into a prime (16418351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 912121 + ... + 912138.

Almost surely, 2^16418331 is an apocalyptic number.

16418331 is a deficient number, since it is larger than the sum of its proper divisors (7297049).

16418331 is a wasteful number, since it uses less digits than its factorization.

16418331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824265 (or 1824262 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 16418331 is about 4051.9539730851. The cubic root of 16418331 is about 254.1614438534.

Adding to 16418331 its reverse (13381461), we get a palindrome (29799792).

The spelling of 16418331 in words is "sixteen million, four hundred eighteen thousand, three hundred thirty-one".