491302611 has 8 divisors (see below), whose sum is σ = 727855760. Its totient is φ = 327535056.

The previous prime is 491302597. The next prime is 491302621. The reversal of 491302611 is 116203194.

491302611 is a `hidden beast` number, since 49 + 1 + 3 + 0 + 2 + 611 = 666.

It is not a de Polignac number, because 491302611 - 2⁹ = 491302099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 18196393 = 491302611 / (4 + 9 + 1 + 3 + 0 + 2 + 6 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491302621) 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, 9098170 + ... + 9098223.

It is an arithmetic number, because the mean of its divisors is an integer number (90981970).

Almost surely, 2^491302611 is an apocalyptic number.

491302611 is a deficient number, since it is larger than the sum of its proper divisors (236553149).

491302611 is a wasteful number, since it uses less digits than its factorization.

491302611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18196402 (or 18196396 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 491302611 is about 22165.3470760103. The cubic root of 491302611 is about 789.0714995420.

The spelling of 491302611 in words is "four hundred ninety-one million, three hundred two thousand, six hundred eleven".