13618201 has 2 divisors, whose sum is σ = 13618202. Its totient is φ = 13618200.

The previous prime is 13618177. The next prime is 13618217. The reversal of 13618201 is 10281631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 4618201 = 3000^2 + 2149^2 .

It is a cyclic number.

It is not a de Polignac number, because 13618201 - 2⁹ = 13617689 is a prime.

It is not a weakly prime, because it can be changed into another prime (13618271) 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 as a sum of consecutive naturals, namely, 6809100 + 6809101.

It is an arithmetic number, because the mean of its divisors is an integer number (6809101).

Almost surely, 2^13618201 is an apocalyptic number.

It is an amenable number.

13618201 is a deficient number, since it is larger than the sum of its proper divisors (1).

13618201 is an equidigital number, since it uses as much as digits as its factorization.

13618201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 13618201 is about 3690.2846773657. The cubic root of 13618201 is about 238.8030741907.

Adding to 13618201 its reverse (10281631), we get a palindrome (23899832).

The spelling of 13618201 in words is "thirteen million, six hundred eighteen thousand, two hundred one".