19339999938 has 64 divisors (see below), whose sum is σ = 49790373120. Its totient is φ = 5450011776.

The previous prime is 19339999909. The next prime is 19339999981. The reversal of 19339999938 is 83999993391.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 322845 + ... + 378032.

It is an arithmetic number, because the mean of its divisors is an integer number (777974580).

Almost surely, 2^19339999938 is an apocalyptic number.

19339999938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19339999938 is an abundant number, since it is smaller than the sum of its proper divisors (30450373182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19339999938 is a wasteful number, since it uses less digits than its factorization.

19339999938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700968 (or 700962 counting only the distinct ones).

The product of its digits is 114791256, while the sum is 72.

The spelling of 19339999938 in words is "nineteen billion, three hundred thirty-nine million, nine hundred ninety-nine thousand, nine hundred thirty-eight".