17989801241 has 2 divisors, whose sum is σ = 17989801242. Its totient is φ = 17989801240.

The previous prime is 17989801223. The next prime is 17989801267. The reversal of 17989801241 is 14210898971.

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., 14160048016 + 3829753225 = 118996^2 + 61885^2 .

It is a cyclic number.

It is not a de Polignac number, because 17989801241 - 2¹⁰ = 17989800217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17989801241.

It is not a weakly prime, because it can be changed into another prime (17989801741) 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, 8994900620 + 8994900621.

It is an arithmetic number, because the mean of its divisors is an integer number (8994900621).

Almost surely, 2^17989801241 is an apocalyptic number.

It is an amenable number.

17989801241 is a deficient number, since it is larger than the sum of its proper divisors (1).

17989801241 is an equidigital number, since it uses as much as digits as its factorization.

17989801241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 50.

The spelling of 17989801241 in words is "seventeen billion, nine hundred eighty-nine million, eight hundred one thousand, two hundred forty-one".