491853488 has 20 divisors (see below), whose sum is σ = 1089104400. Its totient is φ = 210794304.

The previous prime is 491853473. The next prime is 491853491. The reversal of 491853488 is 884358194.

It is a super-2 number, since 2×491853488² = 483839707315532288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

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, 2195663 + ... + 2195886.

It is an arithmetic number, because the mean of its divisors is an integer number (54455220).

Almost surely, 2^491853488 is an apocalyptic number.

It is an amenable number.

491853488 is an abundant number, since it is smaller than the sum of its proper divisors (597250912).

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

491853488 is a wasteful number, since it uses less digits than its factorization.

491853488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391564 (or 4391558 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The square root of 491853488 is about 22177.7701313725. The cubic root of 491853488 is about 789.3663069706.

The spelling of 491853488 in words is "four hundred ninety-one million, eight hundred fifty-three thousand, four hundred eighty-eight".