199414181 has 2 divisors, whose sum is σ = 199414182. Its totient is φ = 199414180.

The previous prime is 199414153. The next prime is 199414183. The reversal of 199414181 is 181414991.

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., 174504100 + 24910081 = 13210^2 + 4991^2 .

It is an emirp because it is prime and its reverse (181414991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199414181 - 2¹⁰ = 199413157 is a prime.

It is a super-2 number, since 2×199414181² = 79532031167801522, which contains 22 as substring.

Together with 199414183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199414183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99707090 + 99707091.

It is an arithmetic number, because the mean of its divisors is an integer number (99707091).

Almost surely, 2^199414181 is an apocalyptic number.

It is an amenable number.

199414181 is a deficient number, since it is larger than the sum of its proper divisors (1).

199414181 is an equidigital number, since it uses as much as digits as its factorization.

199414181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 38.

The square root of 199414181 is about 14121.4086053764. The cubic root of 199414181 is about 584.2320075313.

The spelling of 199414181 in words is "one hundred ninety-nine million, four hundred fourteen thousand, one hundred eighty-one".