19434057863 has 16 divisors (see below), whose sum is σ = 21433144320. Its totient is φ = 17474227200.

The previous prime is 19434057847. The next prime is 19434057901. The reversal of 19434057863 is 36875043491.

It is a cyclic number.

It is not a de Polignac number, because 19434057863 - 2⁴ = 19434057847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19434057823) 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, 741578 + ... + 767336.

It is an arithmetic number, because the mean of its divisors is an integer number (1339571520).

Almost surely, 2^19434057863 is an apocalyptic number.

19434057863 is a deficient number, since it is larger than the sum of its proper divisors (1999086457).

19434057863 is a wasteful number, since it uses less digits than its factorization.

19434057863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26518.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 19434057863 in words is "nineteen billion, four hundred thirty-four million, fifty-seven thousand, eight hundred sixty-three".