491111363 has 4 divisors (see below), whose sum is σ = 491224560. Its totient is φ = 490998168.

The previous prime is 491111353. The next prime is 491111377. The reversal of 491111363 is 363111194.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 491111363 - 2¹⁶ = 491045827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491111353) 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, 49820 + ... + 58857.

It is an arithmetic number, because the mean of its divisors is an integer number (122806140).

Almost surely, 2^491111363 is an apocalyptic number.

491111363 is a deficient number, since it is larger than the sum of its proper divisors (113197).

491111363 is a wasteful number, since it uses less digits than its factorization.

491111363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113196.

The product of its digits is 1944, while the sum is 29.

The square root of 491111363 is about 22161.0325346090. The cubic root of 491111363 is about 788.9690996984.

The spelling of 491111363 in words is "four hundred ninety-one million, one hundred eleven thousand, three hundred sixty-three".