19143342461 has 2 divisors, whose sum is σ = 19143342462. Its totient is φ = 19143342460.

The previous prime is 19143342437. The next prime is 19143342469. The reversal of 19143342461 is 16424334191.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13944067225 + 5199275236 = 118085^2 + 72106^2 .

It is an emirp because it is prime and its reverse (16424334191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19143342461 - 2⁶ = 19143342397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19143342469) 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, 9571671230 + 9571671231.

It is an arithmetic number, because the mean of its divisors is an integer number (9571671231).

Almost surely, 2^19143342461 is an apocalyptic number.

It is an amenable number.

19143342461 is a deficient number, since it is larger than the sum of its proper divisors (1).

19143342461 is an equidigital number, since it uses as much as digits as its factorization.

19143342461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The spelling of 19143342461 in words is "nineteen billion, one hundred forty-three million, three hundred forty-two thousand, four hundred sixty-one".