494005243191 has 4 divisors (see below), whose sum is σ = 658673657592. Its totient is φ = 329336828792.

The previous prime is 494005243189. The next prime is 494005243261. The reversal of 494005243191 is 191342500494.

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 494005243191 - 2¹ = 494005243189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494005243181) 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, 82334207196 + ... + 82334207201.

It is an arithmetic number, because the mean of its divisors is an integer number (164668414398).

Almost surely, 2^494005243191 is an apocalyptic number.

494005243191 is a deficient number, since it is larger than the sum of its proper divisors (164668414401).

494005243191 is a wasteful number, since it uses less digits than its factorization.

494005243191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164668414400.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 494005243191 in words is "four hundred ninety-four billion, five million, two hundred forty-three thousand, one hundred ninety-one".