19147385017 has 2 divisors, whose sum is σ = 19147385018. Its totient is φ = 19147385016.

The previous prime is 19147384913. The next prime is 19147385029. The reversal of 19147385017 is 71058374191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17671980096 + 1475404921 = 132936^2 + 38411^2 .

It is a cyclic number.

It is not a de Polignac number, because 19147385017 - 2¹⁵ = 19147352249 is a prime.

It is not a weakly prime, because it can be changed into another prime (19147385317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9573692508 + 9573692509.

It is an arithmetic number, because the mean of its divisors is an integer number (9573692509).

Almost surely, 2^19147385017 is an apocalyptic number.

It is an amenable number.

19147385017 is a deficient number, since it is larger than the sum of its proper divisors (1).

19147385017 is an equidigital number, since it uses as much as digits as its factorization.

19147385017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 19147385017 in words is "nineteen billion, one hundred forty-seven million, three hundred eighty-five thousand, seventeen".