19738697108 has 48 divisors (see below), whose sum is σ = 37610926080. Its totient is φ = 9009736704.

The previous prime is 19738697089. The next prime is 19738697123. The reversal of 19738697108 is 80179683791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4973741 + ... + 4977707.

It is an arithmetic number, because the mean of its divisors is an integer number (783560960).

Almost surely, 2^19738697108 is an apocalyptic number.

It is an amenable number.

19738697108 is a deficient number, since it is larger than the sum of its proper divisors (17872228972).

19738697108 is a wasteful number, since it uses less digits than its factorization.

19738697108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016 (or 5014 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 59.

The spelling of 19738697108 in words is "nineteen billion, seven hundred thirty-eight million, six hundred ninety-seven thousand, one hundred eight".