491555098 has 8 divisors (see below), whose sum is σ = 737546292. Its totient is φ = 245706336.

The previous prime is 491555083. The next prime is 491555131. The reversal of 491555098 is 890555194.

It can be written as a sum of positive squares in 2 ways, for example, as 433597329 + 57957769 = 20823^2 + 7613^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26515 + ... + 41062.

Almost surely, 2^491555098 is an apocalyptic number.

491555098 is a deficient number, since it is larger than the sum of its proper divisors (245991194).

491555098 is a wasteful number, since it uses less digits than its factorization.

491555098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71216.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 491555098 is about 22171.0418789916. The cubic root of 491555098 is about 789.2066478680.

The spelling of 491555098 in words is "four hundred ninety-one million, five hundred fifty-five thousand, ninety-eight".