1868366866871 has 8 divisors (see below), whose sum is σ = 1879778037504. Its totient is φ = 1856972666880.

The previous prime is 1868366866853. The next prime is 1868366866913. The reversal of 1868366866871 is 1786686638681.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1868366866871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868366866271) 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, 4021766 + ... + 4462211.

It is an arithmetic number, because the mean of its divisors is an integer number (234972254688).

Almost surely, 2^{1868366866871} is an apocalyptic number.

1868366866871 is a deficient number, since it is larger than the sum of its proper divisors (11411170633).

1868366866871 is a wasteful number, since it uses less digits than its factorization.

1868366866871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8485321.

The product of its digits is 668860416, while the sum is 74.

The spelling of 1868366866871 in words is "one trillion, eight hundred sixty-eight billion, three hundred sixty-six million, eight hundred sixty-six thousand, eight hundred seventy-one".