18205061 has 8 divisors (see below), whose sum is σ = 20854080. Its totient is φ = 15568128.

The previous prime is 18205049. The next prime is 18205063. The reversal of 18205061 is 16050281.

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 18205061 - 2¹⁸ = 17942917 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 (18205063) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 485 + ... + 6053.

It is an arithmetic number, because the mean of its divisors is an integer number (2606760).

Almost surely, 2^18205061 is an apocalyptic number.

It is an amenable number.

18205061 is a deficient number, since it is larger than the sum of its proper divisors (2649019).

18205061 is an equidigital number, since it uses as much as digits as its factorization.

18205061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 18205061 is about 4266.7389186591. The cubic root of 18205061 is about 263.0655910658.

The spelling of 18205061 in words is "eighteen million, two hundred five thousand, sixty-one".