19688181197 has 8 divisors (see below), whose sum is σ = 21206364960. Its totient is φ = 18218193840.

The previous prime is 19688181193. The next prime is 19688181203. The reversal of 19688181197 is 79118188691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19688181197 - 2² = 19688181193 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 (19688181193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12048254 + ... + 12049887.

It is an arithmetic number, because the mean of its divisors is an integer number (2650795620).

Almost surely, 2^19688181197 is an apocalyptic number.

It is an amenable number.

19688181197 is a deficient number, since it is larger than the sum of its proper divisors (1518183763).

19688181197 is a wasteful number, since it uses less digits than its factorization.

19688181197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24098203.

The product of its digits is 1741824, while the sum is 59.

The spelling of 19688181197 in words is "nineteen billion, six hundred eighty-eight million, one hundred eighty-one thousand, one hundred ninety-seven".