9919473019 has 2 divisors, whose sum is σ = 9919473020. Its totient is φ = 9919473018.

The previous prime is 9919473007. The next prime is 9919473023. The reversal of 9919473019 is 9103749199.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9919473019 - 2¹¹ = 9919470971 is a prime.

It is a super-2 number, since 2×9919473019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9919470019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4959736509 + 4959736510.

It is an arithmetic number, because the mean of its divisors is an integer number (4959736510).

Almost surely, 2^9919473019 is an apocalyptic number.

9919473019 is a deficient number, since it is larger than the sum of its proper divisors (1).

9919473019 is an equidigital number, since it uses as much as digits as its factorization.

9919473019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 551124, while the sum is 52.

The square root of 9919473019 is about 99596.5512404923. The cubic root of 9919473019 is about 2148.6360932380.

The spelling of 9919473019 in words is "nine billion, nine hundred nineteen million, four hundred seventy-three thousand, nineteen".