194793662871 has 12 divisors (see below), whose sum is σ = 281384819248. Its totient is φ = 129854967264.

The previous prime is 194793662813. The next prime is 194793662887. The reversal of 194793662871 is 178266397491.

194793662871 is a `hidden beast` number, since 1 + 9 + 479 + 36 + 62 + 8 + 71 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-194793662871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 194793662799 and 194793662808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194793662891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 455470 + ... + 772683.

Almost surely, 2^194793662871 is an apocalyptic number.

194793662871 is a deficient number, since it is larger than the sum of its proper divisors (86591156377).

194793662871 is a wasteful number, since it uses less digits than its factorization.

194793662871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245782 (or 1245779 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The spelling of 194793662871 in words is "one hundred ninety-four billion, seven hundred ninety-three million, six hundred sixty-two thousand, eight hundred seventy-one".