868182314491 has 4 divisors (see below), whose sum is σ = 868190054472. Its totient is φ = 868174574512.

The previous prime is 868182314471. The next prime is 868182314509. The reversal of 868182314491 is 194413281868.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 868182314491 - 2²¹ = 868180217339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868182314471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3699226 + ... + 3926911.

It is an arithmetic number, because the mean of its divisors is an integer number (217047513618).

Almost surely, 2^868182314491 is an apocalyptic number.

868182314491 is a deficient number, since it is larger than the sum of its proper divisors (7739981).

868182314491 is a wasteful number, since it uses less digits than its factorization.

868182314491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7739980.

The product of its digits is 2654208, while the sum is 55.

The spelling of 868182314491 in words is "eight hundred sixty-eight billion, one hundred eighty-two million, three hundred fourteen thousand, four hundred ninety-one".