198481211 has 2 divisors, whose sum is σ = 198481212. Its totient is φ = 198481210.

The previous prime is 198481193. The next prime is 198481219. The reversal of 198481211 is 112184891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198481211 - 2⁶ = 198481147 is a prime.

It is a super-2 number, since 2×198481211² = 78789582240053042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (198481219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99240605 + 99240606.

It is an arithmetic number, because the mean of its divisors is an integer number (99240606).

Almost surely, 2^198481211 is an apocalyptic number.

198481211 is a deficient number, since it is larger than the sum of its proper divisors (1).

198481211 is an equidigital number, since it uses as much as digits as its factorization.

198481211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 35.

The square root of 198481211 is about 14088.3359911666. The cubic root of 198481211 is about 583.3194625999.

The spelling of 198481211 in words is "one hundred ninety-eight million, four hundred eighty-one thousand, two hundred eleven".