491568119 has 4 divisors (see below), whose sum is σ = 561792144. Its totient is φ = 421344096.

The previous prime is 491568113. The next prime is 491568137. The reversal of 491568119 is 911865194.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491568119 is a prime.

It is a super-2 number, since 2×491568119² = 483278431234396322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 491568119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491568113) 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, 35112002 + ... + 35112015.

It is an arithmetic number, because the mean of its divisors is an integer number (140448036).

Almost surely, 2^491568119 is an apocalyptic number.

491568119 is a deficient number, since it is larger than the sum of its proper divisors (70224025).

491568119 is an equidigital number, since it uses as much as digits as its factorization.

491568119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70224024.

The product of its digits is 77760, while the sum is 44.

The square root of 491568119 is about 22171.3355258541. The cubic root of 491568119 is about 789.2136163436.

It can be divided in two parts, 49156 and 8119, that added together give a palindrome (57275).

The spelling of 491568119 in words is "four hundred ninety-one million, five hundred sixty-eight thousand, one hundred nineteen".