19857468947294 has 12 divisors (see below), whose sum is σ = 32740207066392. Its totient is φ = 9026122248660.

The previous prime is 19857468947279. The next prime is 19857468947297. The reversal of 19857468947294 is 49274986475891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19857468947297) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41027828162 + ... + 41027828645.

It is an arithmetic number, because the mean of its divisors is an integer number (2728350588866).

Almost surely, 2^{19857468947294} is an apocalyptic number.

19857468947294 is a deficient number, since it is larger than the sum of its proper divisors (12882738119098).

19857468947294 is a wasteful number, since it uses less digits than its factorization.

19857468947294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82055656831 (or 82055656820 counting only the distinct ones).

The product of its digits is 8778792960, while the sum is 83.

The spelling of 19857468947294 in words is "nineteen trillion, eight hundred fifty-seven billion, four hundred sixty-eight million, nine hundred forty-seven thousand, two hundred ninety-four".