19138041999 has 12 divisors (see below), whose sum is σ = 27912226576. Its totient is φ = 12634823232.

The previous prime is 19138041997. The next prime is 19138042013. The reversal of 19138041999 is 99914083191.

19138041999 is a `hidden beast` number, since 1 + 9 + 138 + 0 + 419 + 99 = 666.

It is not a de Polignac number, because 19138041999 - 2¹ = 19138041997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19138041997) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10321642 + ... + 10323495.

Almost surely, 2^19138041999 is an apocalyptic number.

19138041999 is a deficient number, since it is larger than the sum of its proper divisors (8774184577).

19138041999 is a wasteful number, since it uses less digits than its factorization.

19138041999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20645246 (or 20645243 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 54.

The spelling of 19138041999 in words is "nineteen billion, one hundred thirty-eight million, forty-one thousand, nine hundred ninety-nine".