20803158289 has 9 divisors (see below), whose sum is σ = 21750437289. Its totient is φ = 19895500020.

The previous prime is 20803158287. The next prime is 20803158317. The reversal of 20803158289 is 98285130802.

The square root of 20803158289 is 144233.

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

It is not a de Polignac number, because 20803158289 - 2¹ = 20803158287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20803158287) 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 8 ways as a sum of consecutive naturals, for example, 3314224 + ... + 3320494.

Almost surely, 2^20803158289 is an apocalyptic number.

20803158289 is the 144233-rd square number.

20803158289 is the 72117-th centered octagonal number.

It is an amenable number.

20803158289 is a deficient number, since it is larger than the sum of its proper divisors (947279000).

20803158289 is an frugal number, since it uses more digits than its factorization.

20803158289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12588 (or 6294 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 20803158289 in words is "twenty billion, eight hundred three million, one hundred fifty-eight thousand, two hundred eighty-nine".