491785345 has 8 divisors (see below), whose sum is σ = 595872576. Its totient is φ = 389608176.

The previous prime is 491785339. The next prime is 491785351. The reversal of 491785345 is 543587194.

It is an interprime number because it is at equal distance from previous prime (491785339) and next prime (491785351).

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 491785345 - 2³ = 491785337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 491785295 and 491785304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476947 + ... + 477976.

It is an arithmetic number, because the mean of its divisors is an integer number (74484072).

Almost surely, 2^491785345 is an apocalyptic number.

It is an amenable number.

491785345 is a deficient number, since it is larger than the sum of its proper divisors (104087231).

491785345 is a wasteful number, since it uses less digits than its factorization.

491785345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955031.

The product of its digits is 604800, while the sum is 46.

The square root of 491785345 is about 22176.2337875483. The cubic root of 491785345 is about 789.3298514855.

The spelling of 491785345 in words is "four hundred ninety-one million, seven hundred eighty-five thousand, three hundred forty-five".