19434275243 has 2 divisors, whose sum is σ = 19434275244. Its totient is φ = 19434275242.

The previous prime is 19434275213. The next prime is 19434275251. The reversal of 19434275243 is 34257243491.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19434275243 - 2¹² = 19434271147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19434275194 and 19434275203.

It is not a weakly prime, because it can be changed into another prime (19434275213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9717137621 + 9717137622.

It is an arithmetic number, because the mean of its divisors is an integer number (9717137622).

Almost surely, 2^19434275243 is an apocalyptic number.

19434275243 is a deficient number, since it is larger than the sum of its proper divisors (1).

19434275243 is an equidigital number, since it uses as much as digits as its factorization.

19434275243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 44.

The spelling of 19434275243 in words is "nineteen billion, four hundred thirty-four million, two hundred seventy-five thousand, two hundred forty-three".