19016143049 has 2 divisors, whose sum is σ = 19016143050. Its totient is φ = 19016143048.

The previous prime is 19016143019. The next prime is 19016143051. The reversal of 19016143049 is 94034161091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12564840649 + 6451302400 = 112093^2 + 80320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19016143049 is a prime.

It is a super-2 number, since 2×19016143049² (a number of 21 digits) contains 22 as substring.

Together with 19016143051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19016143019) 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, 9508071524 + 9508071525.

It is an arithmetic number, because the mean of its divisors is an integer number (9508071525).

Almost surely, 2^19016143049 is an apocalyptic number.

It is an amenable number.

19016143049 is a deficient number, since it is larger than the sum of its proper divisors (1).

19016143049 is an equidigital number, since it uses as much as digits as its factorization.

19016143049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 19016143049 in words is "nineteen billion, sixteen million, one hundred forty-three thousand, forty-nine".