491188050 has 72 divisors (see below), whose sum is σ = 1368568656. Its totient is φ = 130980240.

The previous prime is 491188031. The next prime is 491188067. The reversal of 491188050 is 50881194.

It is a junction number, because it is equal to n+sod(n) for n = 491187996 and 491188014.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 8064 + ... + 32363.

It is an arithmetic number, because the mean of its divisors is an integer number (19007898).

Almost surely, 2^491188050 is an apocalyptic number.

491188050 is an abundant number, since it is smaller than the sum of its proper divisors (877380606).

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

491188050 is a wasteful number, since it uses less digits than its factorization.

491188050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40454 (or 40437 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 491188050 is about 22162.7626887985. The cubic root of 491188050 is about 789.0101633816.

The spelling of 491188050 in words is "four hundred ninety-one million, one hundred eighty-eight thousand, fifty".