198230719 has 4 divisors (see below), whose sum is σ = 203588344. Its totient is φ = 192873096.

The previous prime is 198230713. The next prime is 198230723. The reversal of 198230719 is 917032891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 917032891 = 19 ⋅48264889.

It is a cyclic number.

It is not a de Polignac number, because 198230719 - 2¹⁷ = 198099647 is a prime.

It is a super-2 number, since 2×198230719² = 78590835910513922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198230713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2678757 + ... + 2678830.

It is an arithmetic number, because the mean of its divisors is an integer number (50897086).

Almost surely, 2^198230719 is an apocalyptic number.

198230719 is a deficient number, since it is larger than the sum of its proper divisors (5357625).

198230719 is an equidigital number, since it uses as much as digits as its factorization.

198230719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5357624.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 198230719 is about 14079.4431352948. The cubic root of 198230719 is about 583.0739677075.

The spelling of 198230719 in words is "one hundred ninety-eight million, two hundred thirty thousand, seven hundred nineteen".