9903599819 has 2 divisors, whose sum is σ = 9903599820. Its totient is φ = 9903599818.

The previous prime is 9903599809. The next prime is 9903599833. The reversal of 9903599819 is 9189953099.

9903599819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9903599819 is a prime.

It is a super-2 number, since 2×9903599819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9903599809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4951799909 + 4951799910.

It is an arithmetic number, because the mean of its divisors is an integer number (4951799910).

Almost surely, 2^9903599819 is an apocalyptic number.

9903599819 is a deficient number, since it is larger than the sum of its proper divisors (1).

9903599819 is an equidigital number, since it uses as much as digits as its factorization.

9903599819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7085880, while the sum is 62.

The square root of 9903599819 is about 99516.8318376344. The cubic root of 9903599819 is about 2147.4893945971.

The spelling of 9903599819 in words is "nine billion, nine hundred three million, five hundred ninety-nine thousand, eight hundred nineteen".