163808801289 has 27 divisors (see below), whose sum is σ = 275257642023. Its totient is φ = 93600172512.

The previous prime is 163808801257. The next prime is 163808801291. The reversal of 163808801289 is 982108808361.

The square root of 163808801289 is 404733.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 106978055625 + 56830745664 = 327075^2 + 238392^2 .

It is not a de Polignac number, because 163808801289 - 2⁵ = 163808801257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163808805289) 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 in 26 ways as a sum of consecutive naturals, for example, 8489757 + ... + 8509029.

Almost surely, 2^163808801289 is an apocalyptic number.

163808801289 is the 404733-rd square number.

163808801289 is the 202367-th centered octagonal number.

It is an amenable number.

163808801289 is a deficient number, since it is larger than the sum of its proper divisors (111448840734).

163808801289 is an frugal number, since it uses more digits than its factorization.

163808801289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38566 (or 19283 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 54.

The spelling of 163808801289 in words is "one hundred sixty-three billion, eight hundred eight million, eight hundred one thousand, two hundred eighty-nine".