18066245 has 12 divisors (see below), whose sum is σ = 22882860. Its totient is φ = 13690944.

The previous prime is 18066241. The next prime is 18066277. The reversal of 18066245 is 54266081.

It can be written as a sum of positive squares in 2 ways, for example, as 14010049 + 4056196 = 3743^2 + 2014^2 .

It is not a de Polignac number, because 18066245 - 2² = 18066241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18066241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3200 + ... + 6809.

It is an arithmetic number, because the mean of its divisors is an integer number (1906905).

Almost surely, 2^18066245 is an apocalyptic number.

It is an amenable number.

18066245 is a deficient number, since it is larger than the sum of its proper divisors (4816615).

18066245 is a wasteful number, since it uses less digits than its factorization.

18066245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10052 (or 10033 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 18066245 is about 4250.4405654003. The cubic root of 18066245 is about 262.3952476971.

The spelling of 18066245 in words is "eighteen million, sixty-six thousand, two hundred forty-five".