198254019 has 8 divisors (see below), whose sum is σ = 265173840. Its totient is φ = 131751776.

The previous prime is 198254003. The next prime is 198254041. The reversal of 198254019 is 910452891.

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

It is a cyclic number.

It is not a de Polignac number, because 198254019 - 2⁴ = 198254003 is a prime.

It is a super-2 number, since 2×198254019² = 78609312099304722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198254099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103284 + ... + 105185.

It is an arithmetic number, because the mean of its divisors is an integer number (33146730).

Almost surely, 2^198254019 is an apocalyptic number.

198254019 is a deficient number, since it is larger than the sum of its proper divisors (66919821).

198254019 is a wasteful number, since it uses less digits than its factorization.

198254019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208789.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 198254019 is about 14080.2705584800. The cubic root of 198254019 is about 583.0968116126.

The spelling of 198254019 in words is "one hundred ninety-eight million, two hundred fifty-four thousand, nineteen".