491485764 has 48 divisors (see below), whose sum is σ = 1429779456. Its totient is φ = 127658400.

The previous prime is 491485751. The next prime is 491485769. The reversal of 491485764 is 467584194.

It is not an unprimeable number, because it can be changed into a prime (491485769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265032 + ... + 266879.

It is an arithmetic number, because the mean of its divisors is an integer number (29787072).

Almost surely, 2^491485764 is an apocalyptic number.

491485764 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

491485764 is an abundant number, since it is smaller than the sum of its proper divisors (938293692).

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

491485764 is a wasteful number, since it uses less digits than its factorization.

491485764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531936 (or 531934 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 491485764 is about 22169.4782076620. The cubic root of 491485764 is about 789.1695401753.

The spelling of 491485764 in words is "four hundred ninety-one million, four hundred eighty-five thousand, seven hundred sixty-four".