491386363 has 16 divisors (see below), whose sum is σ = 557899776. Its totient is φ = 429599520.

The previous prime is 491386351. The next prime is 491386367. The reversal of 491386363 is 363683194.

It is a cyclic number.

It is not a de Polignac number, because 491386363 - 2⁵ = 491386331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491386367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5970 + ... + 31912.

It is an arithmetic number, because the mean of its divisors is an integer number (34868736).

Almost surely, 2^491386363 is an apocalyptic number.

491386363 is a deficient number, since it is larger than the sum of its proper divisors (66513413).

491386363 is a wasteful number, since it uses less digits than its factorization.

491386363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26034.

The product of its digits is 279936, while the sum is 43.

The square root of 491386363 is about 22167.2362508275. The cubic root of 491386363 is about 789.1163344766.

The spelling of 491386363 in words is "four hundred ninety-one million, three hundred eighty-six thousand, three hundred sixty-three".