18330101 has 2 divisors, whose sum is σ = 18330102. Its totient is φ = 18330100.

The previous prime is 18330077. The next prime is 18330107. The reversal of 18330101 is 10103381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18190225 + 139876 = 4265^2 + 374^2 .

It is an emirp because it is prime and its reverse (10103381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18330101 - 2¹⁴ = 18313717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18330101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18330107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9165050 + 9165051.

It is an arithmetic number, because the mean of its divisors is an integer number (9165051).

Almost surely, 2^18330101 is an apocalyptic number.

It is an amenable number.

18330101 is a deficient number, since it is larger than the sum of its proper divisors (1).

18330101 is an equidigital number, since it uses as much as digits as its factorization.

18330101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 18330101 is about 4281.3667210366. The cubic root of 18330101 is about 263.6664990270. Note that the first 3 decimals are identical.

Adding to 18330101 its reverse (10103381), we get a palindrome (28433482).

The spelling of 18330101 in words is "eighteen million, three hundred thirty thousand, one hundred one".