491924160 has 336 divisors, whose sum is σ = 2083588416. Its totient is φ = 103735296.

The previous prime is 491924141. The next prime is 491924177. The reversal of 491924160 is 61429194.

It is a happy number.

491924160 is a `hidden beast` number, since 491 + 9 + 2 + 4 + 160 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 261142 + ... + 263018.

It is an arithmetic number, because the mean of its divisors is an integer number (6201156).

Almost surely, 2^491924160 is an apocalyptic number.

491924160 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491924160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1041794208).

491924160 is an abundant number, since it is smaller than the sum of its proper divisors (1591664256).

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

491924160 is a wasteful number, since it uses less digits than its factorization.

491924160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 491924160 is about 22179.3633813056. The cubic root of 491924160 is about 789.4041118761.

The spelling of 491924160 in words is "four hundred ninety-one million, nine hundred twenty-four thousand, one hundred sixty".