491276365 has 4 divisors (see below), whose sum is σ = 589531644. Its totient is φ = 393021088.

The previous prime is 491276341. The next prime is 491276377. The reversal of 491276365 is 563672194.

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

It can be written as a sum of positive squares in 2 ways, for example, as 327103396 + 164172969 = 18086^2 + 12813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491276365 is a prime.

It is a super-2 number, since 2×491276365² = 482704933615226450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49127632 + ... + 49127641.

It is an arithmetic number, because the mean of its divisors is an integer number (147382911).

Almost surely, 2^491276365 is an apocalyptic number.

It is an amenable number.

491276365 is a deficient number, since it is larger than the sum of its proper divisors (98255279).

491276365 is an equidigital number, since it uses as much as digits as its factorization.

491276365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98255278.

The product of its digits is 272160, while the sum is 43.

The square root of 491276365 is about 22164.7550178205. The cubic root of 491276365 is about 789.0574482296.

The spelling of 491276365 in words is "four hundred ninety-one million, two hundred seventy-six thousand, three hundred sixty-five".