493591801 has 2 divisors, whose sum is σ = 493591802. Its totient is φ = 493591800.

The previous prime is 493591789. The next prime is 493591807. The reversal of 493591801 is 108195394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405982201 + 87609600 = 20149^2 + 9360^2 .

It is a cyclic number.

It is not a de Polignac number, because 493591801 - 2¹³ = 493583609 is a prime.

It is not a weakly prime, because it can be changed into another prime (493591807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246795900 + 246795901.

It is an arithmetic number, because the mean of its divisors is an integer number (246795901).

Almost surely, 2^493591801 is an apocalyptic number.

It is an amenable number.

493591801 is a deficient number, since it is larger than the sum of its proper divisors (1).

493591801 is an equidigital number, since it uses as much as digits as its factorization.

493591801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 493591801 is about 22216.9260024874. The cubic root of 493591801 is about 790.2951420853.

The spelling of 493591801 in words is "four hundred ninety-three million, five hundred ninety-one thousand, eight hundred one".