491194733 has 2 divisors, whose sum is σ = 491194734. Its totient is φ = 491194732.

The previous prime is 491194727. The next prime is 491194757. The reversal of 491194733 is 337491194.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433389124 + 57805609 = 20818^2 + 7603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491194733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491194703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245597366 + 245597367.

It is an arithmetic number, because the mean of its divisors is an integer number (245597367).

Almost surely, 2^491194733 is an apocalyptic number.

It is an amenable number.

491194733 is a deficient number, since it is larger than the sum of its proper divisors (1).

491194733 is an equidigital number, since it uses as much as digits as its factorization.

491194733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 491194733 is about 22162.9134592003. The cubic root of 491194733 is about 789.0137417335.

The spelling of 491194733 in words is "four hundred ninety-one million, one hundred ninety-four thousand, seven hundred thirty-three".