19219199999 has 2 divisors, whose sum is σ = 19219200000. Its totient is φ = 19219199998.

The previous prime is 19219199953. The next prime is 19219200019. The reversal of 19219199999 is 99999191291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19219199999 - 2¹⁶ = 19219134463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19219199939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9609599999 + 9609600000.

It is an arithmetic number, because the mean of its divisors is an integer number (9609600000).

Almost surely, 2^19219199999 is an apocalyptic number.

19219199999 is a deficient number, since it is larger than the sum of its proper divisors (1).

19219199999 is an equidigital number, since it uses as much as digits as its factorization.

19219199999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9565938, while the sum is 68.

The spelling of 19219199999 in words is "nineteen billion, two hundred nineteen million, one hundred ninety-nine thousand, nine hundred ninety-nine".