491127570 has 32 divisors (see below), whose sum is σ = 1309674240. Its totient is φ = 130967280.

The previous prime is 491127551. The next prime is 491127577. The reversal of 491127570 is 75721194.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (491127577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909226 + ... + 909765.

It is an arithmetic number, because the mean of its divisors is an integer number (40927320).

Almost surely, 2^491127570 is an apocalyptic number.

491127570 is an abundant number, since it is smaller than the sum of its proper divisors (818546670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491127570 is a wasteful number, since it uses less digits than its factorization.

491127570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819007 (or 1819001 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 491127570 is about 22161.3981959623. The cubic root of 491127570 is about 788.9777784370.

The spelling of 491127570 in words is "four hundred ninety-one million, one hundred twenty-seven thousand, five hundred seventy".