199803013 has 2 divisors, whose sum is σ = 199803014.
Its totient is φ = 199803012.
The previous prime is 199803007. The next prime is 199803041. The reversal of 199803013 is 310308991.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 148279329 + 51523684 = 12177^2 + 7178^2
It is an emirp because it is prime and its reverse (310308991) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 199803013 - 213 = 199794821 is a prime.
It is equal to p11068585 and since 199803013 and 11068585 have the same sum of digits, it is a Honaker prime.
It is a self number, because there is not a number n which added to its sum of digits gives 199803013.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (199803713) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99901506 + 99901507.
It is an arithmetic number, because the mean of its divisors is an integer number (99901507).
Almost surely, 2199803013 is an apocalyptic number.
It is an amenable number.
199803013 is a deficient number, since it is larger than the sum of its proper divisors (1).
199803013 is an equidigital number, since it uses as much as digits as its factorization.
199803013 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 5832, while the sum is 34.
The square root of 199803013 is about 14135.1693658053.
The cubic root of 199803013 is about 584.6114867455.
The spelling of 199803013 in words is "one hundred ninety-nine million, eight hundred three thousand, thirteen".