19205036849999 has 24 divisors (see below), whose sum is σ = 26246244176208. Its totient is φ = 13813812714240.

The previous prime is 19205036849987. The next prime is 19205036850049. The reversal of 19205036849999 is 99994863050291.

It is not a de Polignac number, because 19205036849999 - 2⁸ = 19205036849743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19205036849399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1370410922 + ... + 1370424935.

It is an arithmetic number, because the mean of its divisors is an integer number (1093593507342).

Almost surely, 2^{19205036849999} is an apocalyptic number.

19205036849999 is a deficient number, since it is larger than the sum of its proper divisors (7041207326209).

19205036849999 is a wasteful number, since it uses less digits than its factorization.

19205036849999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740835895 (or 2740835888 counting only the distinct ones).

The product of its (nonzero) digits is 340122240, while the sum is 74.

The spelling of 19205036849999 in words is "nineteen trillion, two hundred five billion, thirty-six million, eight hundred forty-nine thousand, nine hundred ninety-nine".