491627371 has 2 divisors, whose sum is σ = 491627372. Its totient is φ = 491627370.

The previous prime is 491627363. The next prime is 491627429. The reversal of 491627371 is 173726194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491627371 - 2³ = 491627363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (491627671) 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 as a sum of consecutive naturals, namely, 245813685 + 245813686.

It is an arithmetic number, because the mean of its divisors is an integer number (245813686).

Almost surely, 2^491627371 is an apocalyptic number.

491627371 is a deficient number, since it is larger than the sum of its proper divisors (1).

491627371 is an equidigital number, since it uses as much as digits as its factorization.

491627371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 40.

The square root of 491627371 is about 22172.6717154248. The cubic root of 491627371 is about 789.2453248052.

The spelling of 491627371 in words is "four hundred ninety-one million, six hundred twenty-seven thousand, three hundred seventy-one".