16218069 has 16 divisors (see below), whose sum is σ = 25219200. Its totient is φ = 9266880.

The previous prime is 16218049. The next prime is 16218079. The reversal of 16218069 is 96081261.

It is not a de Polignac number, because 16218069 - 2²¹ = 14120917 is a prime.

It is a super-2 number, since 2×16218069² = 526051524177522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16218019) 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, 6852 + ... + 8909.

It is an arithmetic number, because the mean of its divisors is an integer number (1576200).

Almost surely, 2^16218069 is an apocalyptic number.

It is an amenable number.

16218069 is a deficient number, since it is larger than the sum of its proper divisors (9001131).

16218069 is an equidigital number, since it uses as much as digits as its factorization.

16218069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15785 (or 15771 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 16218069 is about 4027.1663735187. The cubic root of 16218069 is about 253.1238386168.

The spelling of 16218069 in words is "sixteen million, two hundred eighteen thousand, sixty-nine".