491755130 has 16 divisors (see below), whose sum is σ = 891102600. Its totient is φ = 195381312.

The previous prime is 491755129. The next prime is 491755151. The reversal of 491755130 is 31557194.

It can be written as a sum of positive squares in 4 ways, for example, as 286320241 + 205434889 = 16921^2 + 14333^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163529 + ... + 166508.

Almost surely, 2^491755130 is an apocalyptic number.

491755130 is a deficient number, since it is larger than the sum of its proper divisors (399347470).

491755130 is a wasteful number, since it uses less digits than its factorization.

491755130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330193.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 491755130 is about 22175.5525297567. The cubic root of 491755130 is about 789.3136858351.

The spelling of 491755130 in words is "four hundred ninety-one million, seven hundred fifty-five thousand, one hundred thirty".