13598268381889 has 3 divisors (see below), whose sum is σ = 13598272069473. Its totient is φ = 13598264694306.

The previous prime is 13598268381871. The next prime is 13598268381937. The reversal of 13598268381889 is 98818386289531.

The square root of 13598268381889 is 3687583.

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.

It is a de Polignac number, because none of the positive numbers 2^k-13598268381889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13598268381869) 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, 1843792 + ... + 5531374.

It is an arithmetic number, because the mean of its divisors is an integer number (4532757356491).

Almost surely, 2^{13598268381889} is an apocalyptic number.

13598268381889 is the 3687583-rd square number.

13598268381889 is the 1843792-nd centered octagonal number.

It is an amenable number.

13598268381889 is a deficient number, since it is larger than the sum of its proper divisors (3687584).

13598268381889 is an frugal number, since it uses more digits than its factorization.

13598268381889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7375166 (or 3687583 counting only the distinct ones).

The product of its digits is 1433272320, while the sum is 79.

The spelling of 13598268381889 in words is "thirteen trillion, five hundred ninety-eight billion, two hundred sixty-eight million, three hundred eighty-one thousand, eight hundred eighty-nine".