19960886089 has 3 divisors (see below), whose sum is σ = 19961027373. Its totient is φ = 19960744806.

The previous prime is 19960886009. The next prime is 19960886119. The reversal of 19960886089 is 98068806991.

The square root of 19960886089 is 141283.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98068806991 = 197 ⋅497811203.

It is not a de Polignac number, because 19960886089 - 2⁹ = 19960885577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19960886089.

It is not an unprimeable number, because it can be changed into a prime (19960886009) 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 2 ways as a sum of consecutive naturals, for example, 70642 + ... + 211924.

It is an arithmetic number, because the mean of its divisors is an integer number (6653675791).

Almost surely, 2^19960886089 is an apocalyptic number.

19960886089 is the 141283-rd square number.

19960886089 is the 70642-nd centered octagonal number.

It is an amenable number.

19960886089 is a deficient number, since it is larger than the sum of its proper divisors (141284).

19960886089 is an frugal number, since it uses more digits than its factorization.

19960886089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282566 (or 141283 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 64.

Multiplying 19960886089 by its sum of digits (64), we get a square (1277496709696 = 1130264²).

The spelling of 19960886089 in words is "nineteen billion, nine hundred sixty million, eight hundred eighty-six thousand, eighty-nine".