491371480 has 32 divisors (see below), whose sum is σ = 1126450800. Its totient is φ = 192839296.

The previous prime is 491371477. The next prime is 491371481. The reversal of 491371480 is 84173194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491371481) 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, 113770 + ... + 118009.

Almost surely, 2^491371480 is an apocalyptic number.

491371480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491371480 is an abundant number, since it is smaller than the sum of its proper divisors (635079320).

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

491371480 is a wasteful number, since it uses less digits than its factorization.

491371480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231843 (or 231839 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 491371480 is about 22166.9005501446. The cubic root of 491371480 is about 789.1083675366.

The spelling of 491371480 in words is "four hundred ninety-one million, three hundred seventy-one thousand, four hundred eighty".