19128518057 has 16 divisors (see below), whose sum is σ = 20938528512. Its totient is φ = 17330448720.

The previous prime is 19128518021. The next prime is 19128518063. The reversal of 19128518057 is 75081582191.

It is a cyclic number.

It is not a de Polignac number, because 19128518057 - 2²² = 19124323753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19128518257) 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, 5782598 + ... + 5785904.

It is an arithmetic number, because the mean of its divisors is an integer number (1308658032).

Almost surely, 2^19128518057 is an apocalyptic number.

It is an amenable number.

19128518057 is a deficient number, since it is larger than the sum of its proper divisors (1810010455).

19128518057 is a wasteful number, since it uses less digits than its factorization.

19128518057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4948.

The product of its (nonzero) digits is 201600, while the sum is 47.

The spelling of 19128518057 in words is "nineteen billion, one hundred twenty-eight million, five hundred eighteen thousand, fifty-seven".