491994495 has 48 divisors (see below), whose sum is σ = 906759360. Its totient is φ = 246225408.

The previous prime is 491994443. The next prime is 491994497. The reversal of 491994495 is 594499194.

491994495 is a `hidden beast` number, since 4 + 9 + 199 + 449 + 5 = 666.

491994495 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 491994495 - 2¹¹ = 491992447 is a prime.

It is a super-2 number, since 2×491994495² = 484117166220610050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491994497) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50371 + ... + 59339.

It is an arithmetic number, because the mean of its divisors is an integer number (18890820).

Almost surely, 2^491994495 is an apocalyptic number.

491994495 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

491994495 is a deficient number, since it is larger than the sum of its proper divisors (414764865).

491994495 is a wasteful number, since it uses less digits than its factorization.

491994495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9056 (or 9053 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 491994495 is about 22180.9489201882. The cubic root of 491994495 is about 789.4417329139.

The spelling of 491994495 in words is "four hundred ninety-one million, nine hundred ninety-four thousand, four hundred ninety-five".