19508935217189 has 16 divisors (see below), whose sum is σ = 22050069160320. Its totient is φ = 17097606778560.

The previous prime is 19508935217147. The next prime is 19508935217209. The reversal of 19508935217189 is 98171253980591.

It is a de Polignac number, because none of the positive numbers 2^k-19508935217189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19508935207189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46619057 + ... + 47035670.

It is an arithmetic number, because the mean of its divisors is an integer number (1378129322520).

Almost surely, 2^{19508935217189} is an apocalyptic number.

It is an amenable number.

19508935217189 is a deficient number, since it is larger than the sum of its proper divisors (2541133943131).

19508935217189 is a wasteful number, since it uses less digits than its factorization.

19508935217189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93655420.

The product of its (nonzero) digits is 48988800, while the sum is 68.

The spelling of 19508935217189 in words is "nineteen trillion, five hundred eight billion, nine hundred thirty-five million, two hundred seventeen thousand, one hundred eighty-nine".