18045605 has 8 divisors (see below), whose sum is σ = 21706272. Its totient is φ = 14402128.

The previous prime is 18045571. The next prime is 18045607. The reversal of 18045605 is 50654081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18045605 - 2⁶ = 18045541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18045607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1859 + ... + 6288.

It is an arithmetic number, because the mean of its divisors is an integer number (2713284).

Almost surely, 2^18045605 is an apocalyptic number.

It is an amenable number.

18045605 is a deficient number, since it is larger than the sum of its proper divisors (3660667).

18045605 is an equidigital number, since it uses as much as digits as its factorization.

18045605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8595.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 18045605 is about 4248.0118879306. The cubic root of 18045605 is about 262.2952840782.

Adding to 18045605 its reverse (50654081), we get a palindrome (68699686).

The spelling of 18045605 in words is "eighteen million, forty-five thousand, six hundred five".