19116204806 has 4 divisors (see below), whose sum is σ = 28674307212. Its totient is φ = 9558102402.

The previous prime is 19116204799. The next prime is 19116204857. The reversal of 19116204806 is 60840261191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60840261191 = 61 ⋅997381331.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19116204806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4779051200 + ... + 4779051203.

It is an arithmetic number, because the mean of its divisors is an integer number (7168576803).

Almost surely, 2^19116204806 is an apocalyptic number.

19116204806 is a deficient number, since it is larger than the sum of its proper divisors (9558102406).

19116204806 is an equidigital number, since it uses as much as digits as its factorization.

19116204806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9558102405.

The product of its (nonzero) digits is 20736, while the sum is 38.

Adding to 19116204806 its reverse (60840261191), we get a palindrome (79956465997).

The spelling of 19116204806 in words is "nineteen billion, one hundred sixteen million, two hundred four thousand, eight hundred six".