16218364 has 6 divisors (see below), whose sum is σ = 28382144. Its totient is φ = 8109180.

The previous prime is 16218347. The next prime is 16218373. The reversal of 16218364 is 46381261.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027292 + ... + 2027299.

Almost surely, 2^16218364 is an apocalyptic number.

It is an amenable number.

16218364 is a deficient number, since it is larger than the sum of its proper divisors (12163780).

16218364 is a wasteful number, since it uses less digits than its factorization.

16218364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054595 (or 4054593 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 16218364 is about 4027.2029996016. The cubic root of 16218364 is about 253.1253733470.

The spelling of 16218364 in words is "sixteen million, two hundred eighteen thousand, three hundred sixty-four".