491000530 has 16 divisors (see below), whose sum is σ = 892062720. Its totient is φ = 194564272.

The previous prime is 491000507. The next prime is 491000539. The reversal of 491000530 is 35000194.

491000530 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (491000539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228370 + ... + 230509.

It is an arithmetic number, because the mean of its divisors is an integer number (55753920).

Almost surely, 2^491000530 is an apocalyptic number.

491000530 is a deficient number, since it is larger than the sum of its proper divisors (401062190).

491000530 is a wasteful number, since it uses less digits than its factorization.

491000530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458993.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 491000530 is about 22158.5317654397. The cubic root of 491000530 is about 788.9097442597.

The spelling of 491000530 in words is "four hundred ninety-one million, five hundred thirty", and thus it is an aban number.