198058397 has 2 divisors, whose sum is σ = 198058398. Its totient is φ = 198058396.

The previous prime is 198058369. The next prime is 198058409. The reversal of 198058397 is 793850891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122124601 + 75933796 = 11051^2 + 8714^2 .

It is an emirp because it is prime and its reverse (793850891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198058397 - 2¹⁰ = 198057373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198054397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99029198 + 99029199.

It is an arithmetic number, because the mean of its divisors is an integer number (99029199).

Almost surely, 2^198058397 is an apocalyptic number.

It is an amenable number.

198058397 is a deficient number, since it is larger than the sum of its proper divisors (1).

198058397 is an equidigital number, since it uses as much as digits as its factorization.

198058397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 198058397 is about 14073.3221735310. The cubic root of 198058397 is about 582.9049632909.

The spelling of 198058397 in words is "one hundred ninety-eight million, fifty-eight thousand, three hundred ninety-seven".