491358141 has 6 divisors (see below), whose sum is σ = 709739550. Its totient is φ = 327572088.

The previous prime is 491358139. The next prime is 491358143. The reversal of 491358141 is 141853194.

It is an interprime number because it is at equal distance from previous prime (491358139) and next prime (491358143).

It can be written as a sum of positive squares in only one way, i.e., 465653241 + 25704900 = 21579^2 + 5070^2 .

It is not a de Polignac number, because 491358141 - 2¹ = 491358139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 491358096 and 491358105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491358143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27297666 + ... + 27297683.

It is an arithmetic number, because the mean of its divisors is an integer number (118289925).

Almost surely, 2^491358141 is an apocalyptic number.

It is an amenable number.

491358141 is a deficient number, since it is larger than the sum of its proper divisors (218381409).

491358141 is a wasteful number, since it uses less digits than its factorization.

491358141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54595355 (or 54595352 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 491358141 is about 22166.5996715780. The cubic root of 491358141 is about 789.1012269704.

The spelling of 491358141 in words is "four hundred ninety-one million, three hundred fifty-eight thousand, one hundred forty-one".