19450000505 has 16 divisors (see below), whose sum is σ = 25510545984. Its totient is φ = 14148699840.

The previous prime is 19450000483. The next prime is 19450000513. The reversal of 19450000505 is 50500005491.

It is not a de Polignac number, because 19450000505 - 2¹⁶ = 19449934969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2228711 + ... + 2237420.

It is an arithmetic number, because the mean of its divisors is an integer number (1594409124).

Almost surely, 2^19450000505 is an apocalyptic number.

It is an amenable number.

19450000505 is a deficient number, since it is larger than the sum of its proper divisors (6060545479).

19450000505 is a wasteful number, since it uses less digits than its factorization.

19450000505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466216.

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 19450000505 its reverse (50500005491), we get a palindrome (69950005996).

The spelling of 19450000505 in words is "nineteen billion, four hundred fifty million, five hundred five", and thus it is an aban number.