13198538 has 8 divisors (see below), whose sum is σ = 20480580. Its totient is φ = 6371680.

The previous prime is 13198501. The next prime is 13198541. The reversal of 13198538 is 83589131.

It can be written as a sum of positive squares in 2 ways, for example, as 11950849 + 1247689 = 3457^2 + 1117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113723 + ... + 113838.

Almost surely, 2^13198538 is an apocalyptic number.

13198538 is a deficient number, since it is larger than the sum of its proper divisors (7282042).

13198538 is a wasteful number, since it uses less digits than its factorization.

13198538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227592.

The product of its digits is 25920, while the sum is 38.

The square root of 13198538 is about 3632.9792182175. The cubic root of 13198538 is about 236.3244245424.

The spelling of 13198538 in words is "thirteen million, one hundred ninety-eight thousand, five hundred thirty-eight".