19838871334 has 4 divisors (see below), whose sum is σ = 29758307004. Its totient is φ = 9919435666.

The previous prime is 19838871323. The next prime is 19838871341. The reversal of 19838871334 is 43317883891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43317883891 = 176467 ⋅245473.

It is a congruent 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 as a sum of consecutive naturals, namely, 4959717832 + ... + 4959717835.

It is an arithmetic number, because the mean of its divisors is an integer number (7439576751).

Almost surely, 2^19838871334 is an apocalyptic number.

19838871334 is a deficient number, since it is larger than the sum of its proper divisors (9919435670).

19838871334 is an equidigital number, since it uses as much as digits as its factorization.

19838871334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9919435669.

The product of its digits is 3483648, while the sum is 55.

The spelling of 19838871334 in words is "nineteen billion, eight hundred thirty-eight million, eight hundred seventy-one thousand, three hundred thirty-four".