19419438293 has 2 divisors, whose sum is σ = 19419438294. Its totient is φ = 19419438292.

The previous prime is 19419438263. The next prime is 19419438299. The reversal of 19419438293 is 39283491491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12615333124 + 6804105169 = 112318^2 + 82487^2 .

It is an emirp because it is prime and its reverse (39283491491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19419438293 - 2²⁰ = 19418389717 is a prime.

It is a super-2 number, since 2×19419438293² (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 (19419438299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9709719146 + 9709719147.

It is an arithmetic number, because the mean of its divisors is an integer number (9709719147).

Almost surely, 2^19419438293 is an apocalyptic number.

It is an amenable number.

19419438293 is a deficient number, since it is larger than the sum of its proper divisors (1).

19419438293 is an equidigital number, since it uses as much as digits as its factorization.

19419438293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 53.

The spelling of 19419438293 in words is "nineteen billion, four hundred nineteen million, four hundred thirty-eight thousand, two hundred ninety-three".