491806343 has 8 divisors (see below), whose sum is σ = 562198560. Its totient is φ = 421447680.

The previous prime is 491806327. The next prime is 491806361. The reversal of 491806343 is 343608194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491806343 - 2⁴ = 491806327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 491806297 and 491806306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491806373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52823 + ... + 61431.

It is an arithmetic number, because the mean of its divisors is an integer number (70274820).

Almost surely, 2^491806343 is an apocalyptic number.

491806343 is a deficient number, since it is larger than the sum of its proper divisors (70392217).

491806343 is an equidigital number, since it uses as much as digits as its factorization.

491806343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16777.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 491806343 is about 22176.7072172584. The cubic root of 491806343 is about 789.3410854602.

The spelling of 491806343 in words is "four hundred ninety-one million, eight hundred six thousand, three hundred forty-three".