198513369 has 16 divisors (see below), whose sum is σ = 311394240. Its totient is φ = 124557120.

The previous prime is 198513283. The next prime is 198513443. The reversal of 198513369 is 963315891.

It is not a de Polignac number, because 198513369 - 2¹⁷ = 198382297 is a prime.

It is a super-2 number, since 2×198513369² = 78815115343460322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198533369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215787 + ... + 216704.

It is an arithmetic number, because the mean of its divisors is an integer number (19462140).

Almost surely, 2^198513369 is an apocalyptic number.

It is an amenable number.

198513369 is a deficient number, since it is larger than the sum of its proper divisors (112880871).

198513369 is a wasteful number, since it uses less digits than its factorization.

198513369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432517 (or 432511 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 198513369 is about 14089.4772436737. The cubic root of 198513369 is about 583.3509641111.

It can be divided in two parts, 19851 and 3369, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 198513369 in words is "one hundred ninety-eight million, five hundred thirteen thousand, three hundred sixty-nine".