19141947049 has 2 divisors, whose sum is σ = 19141947050. Its totient is φ = 19141947048.

The previous prime is 19141947029. The next prime is 19141947067. The reversal of 19141947049 is 94074914191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16714611225 + 2427335824 = 129285^2 + 49268^2 .

It is an emirp because it is prime and its reverse (94074914191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19141947049 - 2²³ = 19133558441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19141946993 and 19141947011.

It is not a weakly prime, because it can be changed into another prime (19141947029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9570973524 + 9570973525.

It is an arithmetic number, because the mean of its divisors is an integer number (9570973525).

Almost surely, 2^19141947049 is an apocalyptic number.

It is an amenable number.

19141947049 is a deficient number, since it is larger than the sum of its proper divisors (1).

19141947049 is an equidigital number, since it uses as much as digits as its factorization.

19141947049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 19141947049 in words is "nineteen billion, one hundred forty-one million, nine hundred forty-seven thousand, forty-nine".