198223801 has 2 divisors, whose sum is σ = 198223802. Its totient is φ = 198223800.

The previous prime is 198223777. The next prime is 198223841. The reversal of 198223801 is 108322891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180203776 + 18020025 = 13424^2 + 4245^2 .

It is a cyclic number.

It is not a de Polignac number, because 198223801 - 2²¹ = 196126649 is a prime.

It is not a weakly prime, because it can be changed into another prime (198223841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99111900 + 99111901.

It is an arithmetic number, because the mean of its divisors is an integer number (99111901).

Almost surely, 2^198223801 is an apocalyptic number.

It is an amenable number.

198223801 is a deficient number, since it is larger than the sum of its proper divisors (1).

198223801 is an equidigital number, since it uses as much as digits as its factorization.

198223801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 198223801 is about 14079.1974558211. The cubic root of 198223801 is about 583.0671847820.

The spelling of 198223801 in words is "one hundred ninety-eight million, two hundred twenty-three thousand, eight hundred one".