491494375 has 20 divisors (see below), whose sum is σ = 646511800. Its totient is φ = 372492000.

The previous prime is 491494373. The next prime is 491494391. The reversal of 491494375 is 573494194.

It is not a de Polignac number, because 491494375 - 2¹ = 491494373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491494373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8820 + ... + 32569.

It is an arithmetic number, because the mean of its divisors is an integer number (32325590).

Almost surely, 2^491494375 is an apocalyptic number.

491494375 is a deficient number, since it is larger than the sum of its proper divisors (155017425).

491494375 is an equidigital number, since it uses as much as digits as its factorization.

491494375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41428 (or 41413 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 491494375 is about 22169.6724152613. The cubic root of 491494375 is about 789.1741489892.

The spelling of 491494375 in words is "four hundred ninety-one million, four hundred ninety-four thousand, three hundred seventy-five".