19197337123 has 2 divisors, whose sum is σ = 19197337124. Its totient is φ = 19197337122.

The previous prime is 19197337099. The next prime is 19197337127. The reversal of 19197337123 is 32173379191.

It is a strong prime.

It is an emirp because it is prime and its reverse (32173379191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19197337123 - 2¹⁷ = 19197206051 is a prime.

It is a super-2 number, since 2×19197337123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19197337127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9598668561 + 9598668562.

It is an arithmetic number, because the mean of its divisors is an integer number (9598668562).

Almost surely, 2^19197337123 is an apocalyptic number.

19197337123 is a deficient number, since it is larger than the sum of its proper divisors (1).

19197337123 is an equidigital number, since it uses as much as digits as its factorization.

19197337123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 214326, while the sum is 46.

The spelling of 19197337123 in words is "nineteen billion, one hundred ninety-seven million, three hundred thirty-seven thousand, one hundred twenty-three".