198968419 has 4 divisors (see below), whose sum is σ = 214273696. Its totient is φ = 183663144.

The previous prime is 198968411. The next prime is 198968431. The reversal of 198968419 is 914869891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198968419 - 2³ = 198968411 is a prime.

It is a super-2 number, since 2×198968419² = 79176863518719122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198968419.

It is not an unprimeable number, because it can be changed into a prime (198968411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7652619 + ... + 7652644.

It is an arithmetic number, because the mean of its divisors is an integer number (53568424).

Almost surely, 2^198968419 is an apocalyptic number.

198968419 is a deficient number, since it is larger than the sum of its proper divisors (15305277).

198968419 is a wasteful number, since it uses less digits than its factorization.

198968419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15305276.

The product of its digits is 1119744, while the sum is 55.

The square root of 198968419 is about 14105.6165763855. The cubic root of 198968419 is about 583.7963602796.

The spelling of 198968419 in words is "one hundred ninety-eight million, nine hundred sixty-eight thousand, four hundred nineteen".