19160648641 has 4 divisors (see below), whose sum is σ = 19275383232. Its totient is φ = 19045914052.

The previous prime is 19160648599. The next prime is 19160648659. The reversal of 19160648641 is 14684606191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19160648641 - 2⁷ = 19160648513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19160648591 and 19160648600.

It is not an unprimeable number, because it can be changed into a prime (19160643641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57367045 + ... + 57367378.

It is an arithmetic number, because the mean of its divisors is an integer number (4818845808).

Almost surely, 2^19160648641 is an apocalyptic number.

It is an amenable number.

19160648641 is a deficient number, since it is larger than the sum of its proper divisors (114734591).

19160648641 is a wasteful number, since it uses less digits than its factorization.

19160648641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114734590.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 19160648641 in words is "nineteen billion, one hundred sixty million, six hundred forty-eight thousand, six hundred forty-one".