19860919017 has 8 divisors (see below), whose sum is σ = 27335458560. Its totient is φ = 12813496080.

The previous prime is 19860918989. The next prime is 19860919031. The reversal of 19860919017 is 71091906891.

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

It is not a de Polignac number, because 19860919017 - 2⁶ = 19860918953 is a prime.

It is a super-3 number, since 3×19860919017³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (19860919217) 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, 106779042 + ... + 106779227.

It is an arithmetic number, because the mean of its divisors is an integer number (3416932320).

Almost surely, 2^19860919017 is an apocalyptic number.

It is an amenable number.

19860919017 is a deficient number, since it is larger than the sum of its proper divisors (7474539543).

19860919017 is a wasteful number, since it uses less digits than its factorization.

19860919017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213558303.

The product of its (nonzero) digits is 244944, while the sum is 51.

The spelling of 19860919017 in words is "nineteen billion, eight hundred sixty million, nine hundred nineteen thousand, seventeen".