19896698868 has 12 divisors (see below), whose sum is σ = 46425630720. Its totient is φ = 6632232952.

The previous prime is 19896698837. The next prime is 19896698869. The reversal of 19896698868 is 86889669891.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 19896698793 and 19896698802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19896698869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829029108 + ... + 829029131.

It is an arithmetic number, because the mean of its divisors is an integer number (3868802560).

Almost surely, 2^19896698868 is an apocalyptic number.

It is an amenable number.

19896698868 is an abundant number, since it is smaller than the sum of its proper divisors (26528931852).

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

19896698868 is a wasteful number, since it uses less digits than its factorization.

19896698868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658058246 (or 1658058244 counting only the distinct ones).

The product of its digits is 644972544, while the sum is 78.

The spelling of 19896698868 in words is "nineteen billion, eight hundred ninety-six million, six hundred ninety-eight thousand, eight hundred sixty-eight".