491162530 has 16 divisors (see below), whose sum is σ = 884494584. Its totient is φ = 196375680.

The previous prime is 491162509. The next prime is 491162533. The reversal of 491162530 is 35261194.

It can be written as a sum of positive squares in 4 ways, for example, as 300363561 + 190798969 = 17331^2 + 13813^2 .

It is a junction number, because it is equal to n+sod(n) for n = 491162492 and 491162501.

It is not an unprimeable number, because it can be changed into a prime (491162533) 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, 14800 + ... + 34660.

Almost surely, 2^491162530 is an apocalyptic number.

491162530 is a deficient number, since it is larger than the sum of its proper divisors (393332054).

491162530 is a wasteful number, since it uses less digits than its factorization.

491162530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22341.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 491162530 is about 22162.1869408233. The cubic root of 491162530 is about 788.9964986300.

The spelling of 491162530 in words is "four hundred ninety-one million, one hundred sixty-two thousand, five hundred thirty".