19048507805 has 8 divisors (see below), whose sum is σ = 22860344832. Its totient is φ = 15237382608.

The previous prime is 19048507781. The next prime is 19048507859. The reversal of 19048507805 is 50870584091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19048507805 - 2¹² = 19048503709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19048507805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117197 + ... + 227666.

It is an arithmetic number, because the mean of its divisors is an integer number (2857543104).

Almost surely, 2^19048507805 is an apocalyptic number.

It is an amenable number.

19048507805 is a deficient number, since it is larger than the sum of its proper divisors (3811837027).

19048507805 is a wasteful number, since it uses less digits than its factorization.

19048507805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355915.

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 19048507805 in words is "nineteen billion, forty-eight million, five hundred seven thousand, eight hundred five".