199192481 has 2 divisors, whose sum is σ = 199192482. Its totient is φ = 199192480.

The previous prime is 199192463. The next prime is 199192529. The reversal of 199192481 is 184291991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185204881 + 13987600 = 13609^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 199192481 - 2¹⁸ = 198930337 is a prime.

It is a super-2 number, since 2×199192481² = 79355288973870722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (199192681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99596240 + 99596241.

It is an arithmetic number, because the mean of its divisors is an integer number (99596241).

Almost surely, 2^199192481 is an apocalyptic number.

It is an amenable number.

199192481 is a deficient number, since it is larger than the sum of its proper divisors (1).

199192481 is an equidigital number, since it uses as much as digits as its factorization.

199192481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 44.

The square root of 199192481 is about 14113.5566389199. The cubic root of 199192481 is about 584.0154193480.

The spelling of 199192481 in words is "one hundred ninety-nine million, one hundred ninety-two thousand, four hundred eighty-one".