491719747917194 has 8 divisors (see below), whose sum is σ = 748588272948768. Its totient is φ = 242190323600940.

The previous prime is 491719747917163. The next prime is 491719747917199.

491719747917194 is nontrivially palindromic in base 10.

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

It is not an unprimeable number, because it can be changed into a prime (491719747917199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1834775178662 + ... + 1834775178929.

It is an arithmetic number, because the mean of its divisors is an integer number (93573534118596).

Almost surely, 2^{491719747917194} is an apocalyptic number.

491719747917194 is a deficient number, since it is larger than the sum of its proper divisors (256868525031574).

491719747917194 is a wasteful number, since it uses less digits than its factorization.

491719747917194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669550357660.

The product of its digits is 1008189504, while the sum is 80.

The spelling of 491719747917194 in words is "four hundred ninety-one trillion, seven hundred nineteen billion, seven hundred forty-seven million, nine hundred seventeen thousand, one hundred ninety-four".