18366069 has 16 divisors (see below), whose sum is σ = 26136000. Its totient is φ = 11431680.

The previous prime is 18366059. The next prime is 18366071. The reversal of 18366069 is 96066381.

It is a happy number.

It is not a de Polignac number, because 18366069 - 2⁸ = 18365813 is a prime.

It is a super-2 number, since 2×18366069² = 674624981025522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18366059) 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 15 ways as a sum of consecutive naturals, for example, 5307 + ... + 8055.

It is an arithmetic number, because the mean of its divisors is an integer number (1633500).

Almost surely, 2^18366069 is an apocalyptic number.

It is an amenable number.

18366069 is a deficient number, since it is larger than the sum of its proper divisors (7769931).

18366069 is a wasteful number, since it uses less digits than its factorization.

18366069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 18366069 is about 4285.5651902637. The cubic root of 18366069 is about 263.8388450567.

The spelling of 18366069 in words is "eighteen million, three hundred sixty-six thousand, sixty-nine".