19480099909 has 2 divisors, whose sum is σ = 19480099910. Its totient is φ = 19480099908.

The previous prime is 19480099861. The next prime is 19480099913. The reversal of 19480099909 is 90999008491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18408519684 + 1071580225 = 135678^2 + 32735^2 .

It is an emirp because it is prime and its reverse (90999008491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19480099909 - 2³³ = 10890165317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19480099979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9740049954 + 9740049955.

It is an arithmetic number, because the mean of its divisors is an integer number (9740049955).

Almost surely, 2^19480099909 is an apocalyptic number.

It is an amenable number.

19480099909 is a deficient number, since it is larger than the sum of its proper divisors (1).

19480099909 is an equidigital number, since it uses as much as digits as its factorization.

19480099909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 58.

The spelling of 19480099909 in words is "nineteen billion, four hundred eighty million, ninety-nine thousand, nine hundred nine".