19345438071 has 12 divisors (see below), whose sum is σ = 28190698848. Its totient is φ = 12782825664.

The previous prime is 19345438019. The next prime is 19345438093. The reversal of 19345438071 is 17083454391.

19345438071 is a `hidden beast` number, since 1 + 9 + 34 + 543 + 8 + 0 + 71 = 666.

It is not a de Polignac number, because 19345438071 - 2¹³ = 19345429879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19345438171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9510015 + ... + 9512048.

It is an arithmetic number, because the mean of its divisors is an integer number (2349224904).

Almost surely, 2^19345438071 is an apocalyptic number.

19345438071 is a deficient number, since it is larger than the sum of its proper divisors (8845260777).

19345438071 is a wasteful number, since it uses less digits than its factorization.

19345438071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19022182 (or 19022179 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 19345438071 in words is "nineteen billion, three hundred forty-five million, four hundred thirty-eight thousand, seventy-one".