198072269 has 2 divisors, whose sum is σ = 198072270. Its totient is φ = 198072268.

The previous prime is 198072247. The next prime is 198072311. The reversal of 198072269 is 962270891.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100260169 + 97812100 = 10013^2 + 9890^2 .

It is a cyclic number.

It is not a de Polignac number, because 198072269 - 2⁸ = 198072013 is a prime.

It is a super-2 number, since 2×198072269² = 78465247493616722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198072209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99036134 + 99036135.

It is an arithmetic number, because the mean of its divisors is an integer number (99036135).

Almost surely, 2^198072269 is an apocalyptic number.

It is an amenable number.

198072269 is a deficient number, since it is larger than the sum of its proper divisors (1).

198072269 is an equidigital number, since it uses as much as digits as its factorization.

198072269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 198072269 is about 14073.8150122843. The cubic root of 198072269 is about 582.9185718511.

The spelling of 198072269 in words is "one hundred ninety-eight million, seventy-two thousand, two hundred sixty-nine".