19469646168 has 64 divisors (see below), whose sum is σ = 58899778560. Its totient is φ = 5235534336.

The previous prime is 19469646139. The next prime is 19469646187. The reversal of 19469646168 is 86164696491.

It is a happy number.

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, 3405696 + ... + 3411407.

It is an arithmetic number, because the mean of its divisors is an integer number (920309040).

Almost surely, 2^19469646168 is an apocalyptic number.

It is an amenable number.

19469646168 is an abundant number, since it is smaller than the sum of its proper divisors (39430132392).

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

19469646168 is a wasteful number, since it uses less digits than its factorization.

19469646168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6817136 (or 6817132 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 60.

The spelling of 19469646168 in words is "nineteen billion, four hundred sixty-nine million, six hundred forty-six thousand, one hundred sixty-eight".