18366145 has 16 divisors (see below), whose sum is σ = 25269120. Its totient is φ = 12553344.

The previous prime is 18366133. The next prime is 18366233. The reversal of 18366145 is 54166381.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18366145 - 2¹⁷ = 18235073 is a prime.

It is a super-2 number, since 2×18366145² = 674630564322050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18366145.

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 in 15 ways as a sum of consecutive naturals, for example, 13674 + ... + 14956.

It is an arithmetic number, because the mean of its divisors is an integer number (1579320).

Almost surely, 2^18366145 is an apocalyptic number.

It is an amenable number.

18366145 is a deficient number, since it is larger than the sum of its proper divisors (6902975).

18366145 is a wasteful number, since it uses less digits than its factorization.

18366145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704.

The product of its digits is 17280, while the sum is 34.

The square root of 18366145 is about 4285.5740572297. The cubic root of 18366145 is about 263.8392089837.

The spelling of 18366145 in words is "eighteen million, three hundred sixty-six thousand, one hundred forty-five".