18206065 has 8 divisors (see below), whose sum is σ = 23132520. Its totient is φ = 13708032.

The previous prime is 18206063. The next prime is 18206077. The reversal of 18206065 is 56060281.

It can be written as a sum of positive squares in 4 ways, for example, as 4397409 + 13808656 = 2097^2 + 3716^2 .

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 18206065 - 2¹ = 18206063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18206063) 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 7 ways as a sum of consecutive naturals, for example, 107010 + ... + 107179.

It is an arithmetic number, because the mean of its divisors is an integer number (2891565).

Almost surely, 2^18206065 is an apocalyptic number.

It is an amenable number.

18206065 is a deficient number, since it is larger than the sum of its proper divisors (4926455).

18206065 is a wasteful number, since it uses less digits than its factorization.

18206065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214211.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 18206065 is about 4266.8565712946. The cubic root of 18206065 is about 263.0704269555.

The spelling of 18206065 in words is "eighteen million, two hundred six thousand, sixty-five".