491576290 has 16 divisors (see below), whose sum is σ = 903664512. Its totient is φ = 192446704.

The previous prime is 491576257. The next prime is 491576291. The reversal of 491576290 is 92675194.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (491576291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522484 + ... + 523423.

It is an arithmetic number, because the mean of its divisors is an integer number (56479032).

Almost surely, 2^491576290 is an apocalyptic number.

491576290 is a deficient number, since it is larger than the sum of its proper divisors (412088222).

491576290 is a wasteful number, since it uses less digits than its factorization.

491576290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045961.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 491576290 is about 22171.5197945472. The cubic root of 491576290 is about 789.2179891717.

The spelling of 491576290 in words is "four hundred ninety-one million, five hundred seventy-six thousand, two hundred ninety".