491280243 has 8 divisors (see below), whose sum is σ = 656387328. Its totient is φ = 326846664.

The previous prime is 491280241. The next prime is 491280259. The reversal of 491280243 is 342082194.

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

It is not a de Polignac number, because 491280243 - 2¹ = 491280241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491280241) 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, 166671 + ... + 169592.

It is an arithmetic number, because the mean of its divisors is an integer number (82048416).

Almost surely, 2^491280243 is an apocalyptic number.

491280243 is a deficient number, since it is larger than the sum of its proper divisors (165107085).

491280243 is a wasteful number, since it uses less digits than its factorization.

491280243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336753.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 491280243 is about 22164.8424988765. The cubic root of 491280243 is about 789.0595244247.

The spelling of 491280243 in words is "four hundred ninety-one million, two hundred eighty thousand, two hundred forty-three".