19653030919 has 2 divisors, whose sum is σ = 19653030920. Its totient is φ = 19653030918.

The previous prime is 19653030911. The next prime is 19653030953. The reversal of 19653030919 is 91903035691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19653030919 - 2³ = 19653030911 is a prime.

It is a super-2 number, since 2×19653030919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19653030911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9826515459 + 9826515460.

It is an arithmetic number, because the mean of its divisors is an integer number (9826515460).

Almost surely, 2^19653030919 is an apocalyptic number.

19653030919 is a deficient number, since it is larger than the sum of its proper divisors (1).

19653030919 is an equidigital number, since it uses as much as digits as its factorization.

19653030919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196830, while the sum is 46.

The spelling of 19653030919 in words is "nineteen billion, six hundred fifty-three million, thirty thousand, nine hundred nineteen".