19104535857 has 32 divisors (see below), whose sum is σ = 28093248000. Its totient is φ = 11451928320.

The previous prime is 19104535843. The next prime is 19104535867. The reversal of 19104535857 is 75853540191.

It is not a de Polignac number, because 19104535857 - 2¹⁰ = 19104534833 is a prime.

It is a super-2 number, since 2×19104535857² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (19104535837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1855638 + ... + 1865904.

It is an arithmetic number, because the mean of its divisors is an integer number (877914000).

Almost surely, 2^19104535857 is an apocalyptic number.

It is an amenable number.

19104535857 is a deficient number, since it is larger than the sum of its proper divisors (8988712143).

19104535857 is a wasteful number, since it uses less digits than its factorization.

19104535857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10893.

The product of its (nonzero) digits is 756000, while the sum is 48.

The spelling of 19104535857 in words is "nineteen billion, one hundred four million, five hundred thirty-five thousand, eight hundred fifty-seven".