198116377 has 2 divisors, whose sum is σ = 198116378. Its totient is φ = 198116376.

The previous prime is 198116353. The next prime is 198116383. The reversal of 198116377 is 773611891.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182898576 + 15217801 = 13524^2 + 3901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198116377 is a prime.

It is a super-2 number, since 2×198116377² = 78500197671212258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (198116977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99058188 + 99058189.

It is an arithmetic number, because the mean of its divisors is an integer number (99058189).

Almost surely, 2^198116377 is an apocalyptic number.

It is an amenable number.

198116377 is a deficient number, since it is larger than the sum of its proper divisors (1).

198116377 is an equidigital number, since it uses as much as digits as its factorization.

198116377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 43.

The square root of 198116377 is about 14075.3819486364. The cubic root of 198116377 is about 582.9618379853.

The spelling of 198116377 in words is "one hundred ninety-eight million, one hundred sixteen thousand, three hundred seventy-seven".