199883693 has 2 divisors, whose sum is σ = 199883694.
Its totient is φ = 199883692.
The previous prime is 199883659. The next prime is 199883699. The reversal of 199883693 is 396388991.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 134629609 + 65254084 = 11603^2 + 8078^2
It is an emirp because it is prime and its reverse (396388991) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 199883693 - 212 = 199879597 is a prime.
It is a Sophie Germain prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (199883699) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99941846 + 99941847.
It is an arithmetic number, because the mean of its divisors is an integer number (99941847).
Almost surely, 2199883693 is an apocalyptic number.
It is an amenable number.
199883693 is a deficient number, since it is larger than the sum of its proper divisors (1).
199883693 is an equidigital number, since it uses as much as digits as its factorization.
199883693 is an evil number, because the sum of its binary digits is even.
The product of its digits is 2519424, while the sum is 56.
The square root of 199883693 is about 14138.0229523084.
The cubic root of 199883693 is about 584.6901644173.
The spelling of 199883693 in words is "one hundred ninety-nine million, eight hundred eighty-three thousand, six hundred ninety-three".