19859107068 has 24 divisors (see below), whose sum is σ = 51486574160. Its totient is φ = 6619702320.

The previous prime is 19859107019. The next prime is 19859107069. The reversal of 19859107068 is 86070195891.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19859107069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91940203 + ... + 91940418.

Almost surely, 2^19859107068 is an apocalyptic number.

19859107068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19859107068 is an abundant number, since it is smaller than the sum of its proper divisors (31627467092).

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

19859107068 is a wasteful number, since it uses less digits than its factorization.

19859107068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183880634 (or 183880626 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 54.

The spelling of 19859107068 in words is "nineteen billion, eight hundred fifty-nine million, one hundred seven thousand, sixty-eight".