491967683 has 4 divisors (see below), whose sum is σ = 492012048. Its totient is φ = 491923320.

The previous prime is 491967673. The next prime is 491967691. The reversal of 491967683 is 386769194.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491967683 is a prime.

It is a super-2 number, since 2×491967683² = 484064402232776978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491967673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10685 + ... + 33137.

It is an arithmetic number, because the mean of its divisors is an integer number (123003012).

Almost surely, 2^491967683 is an apocalyptic number.

491967683 is a deficient number, since it is larger than the sum of its proper divisors (44365).

491967683 is a wasteful number, since it uses less digits than its factorization.

491967683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44364.

The product of its digits is 1959552, while the sum is 53.

The square root of 491967683 is about 22180.3445194163. The cubic root of 491967683 is about 789.4273920378.

The spelling of 491967683 in words is "four hundred ninety-one million, nine hundred sixty-seven thousand, six hundred eighty-three".