491161060 has 24 divisors (see below), whose sum is σ = 1110780216. Its totient is φ = 181351680.

The previous prime is 491161043. The next prime is 491161061. The reversal of 491161060 is 60161194.

It can be written as a sum of positive squares in 4 ways, for example, as 9972964 + 481188096 = 3158^2 + 21936^2 .

It is not an unprimeable number, because it can be changed into a prime (491161061) 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, 944281 + ... + 944800.

It is an arithmetic number, because the mean of its divisors is an integer number (46282509).

Almost surely, 2^491161060 is an apocalyptic number.

It is an amenable number.

491161060 is an abundant number, since it is smaller than the sum of its proper divisors (619619156).

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

491161060 is a wasteful number, since it uses less digits than its factorization.

491161060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889103 (or 1889101 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 491161060 is about 22162.1537762014. The cubic root of 491161060 is about 788.9957115002.

It can be divided in two parts, 49116 and 1060, that added together give a square (50176 = 224²).

The spelling of 491161060 in words is "four hundred ninety-one million, one hundred sixty-one thousand, sixty".