18273268201 has 2 divisors, whose sum is σ = 18273268202. Its totient is φ = 18273268200.

The previous prime is 18273268187. The next prime is 18273268253. The reversal of 18273268201 is 10286237281.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11367824400 + 6905443801 = 106620^2 + 83099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18273268201 is a prime.

It is not a weakly prime, because it can be changed into another prime (18273268001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9136634100 + 9136634101.

It is an arithmetic number, because the mean of its divisors is an integer number (9136634101).

Almost surely, 2^18273268201 is an apocalyptic number.

It is an amenable number.

18273268201 is a deficient number, since it is larger than the sum of its proper divisors (1).

18273268201 is an equidigital number, since it uses as much as digits as its factorization.

18273268201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 18273268201 in words is "eighteen billion, two hundred seventy-three million, two hundred sixty-eight thousand, two hundred one".