491763888 has 120 divisors (see below), whose sum is σ = 1715890176. Its totient is φ = 127728000.

The previous prime is 491763887. The next prime is 491763911. The reversal of 491763888 is 888367194.

491763888 is a `hidden beast` number, since 491 + 76 + 3 + 8 + 88 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (491763887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11088 + ... + 33263.

Almost surely, 2^491763888 is an apocalyptic number.

491763888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

491763888 is an abundant number, since it is smaller than the sum of its proper divisors (1224126288).

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

491763888 is a wasteful number, since it uses less digits than its factorization.

491763888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44383 (or 44374 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 491763888 is about 22175.7499985908. The cubic root of 491763888 is about 789.3183716145.

The spelling of 491763888 in words is "four hundred ninety-one million, seven hundred sixty-three thousand, eight hundred eighty-eight".