198331151 has 2 divisors, whose sum is σ = 198331152. Its totient is φ = 198331150.

The previous prime is 198331127. The next prime is 198331171. The reversal of 198331151 is 151133891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198331151 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198331121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99165575 + 99165576.

It is an arithmetic number, because the mean of its divisors is an integer number (99165576).

Almost surely, 2^198331151 is an apocalyptic number.

198331151 is a deficient number, since it is larger than the sum of its proper divisors (1).

198331151 is an equidigital number, since it uses as much as digits as its factorization.

198331151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 32.

The square root of 198331151 is about 14083.0093019922. The cubic root of 198331151 is about 583.1724209951.

The spelling of 198331151 in words is "one hundred ninety-eight million, three hundred thirty-one thousand, one hundred fifty-one".