13198103689 has 3 divisors (see below), whose sum is σ = 13198218573. Its totient is φ = 13197988806.

The previous prime is 13198103683. The next prime is 13198103713. The reversal of 13198103689 is 98630189131.

The square root of 13198103689 is 114883.

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: 98630189131 = 577 ⋅170936203.

It is not a de Polignac number, because 13198103689 - 2⁵ = 13198103657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13198103683) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 57442 + ... + 172324.

It is an arithmetic number, because the mean of its divisors is an integer number (4399406191).

Almost surely, 2^13198103689 is an apocalyptic number.

13198103689 is the 114883-rd square number.

13198103689 is the 57442-nd centered octagonal number.

It is an amenable number.

13198103689 is a deficient number, since it is larger than the sum of its proper divisors (114884).

13198103689 is an frugal number, since it uses more digits than its factorization.

13198103689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229766 (or 114883 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 49.

Multiplying 13198103689 by its sum of digits (49), we get a square (646707080761 = 804181²).

The spelling of 13198103689 in words is "thirteen billion, one hundred ninety-eight million, one hundred three thousand, six hundred eighty-nine".