330993493 has 2 divisors, whose sum is σ = 330993494. Its totient is φ = 330993492.

The previous prime is 330993491. The next prime is 330993511. The reversal of 330993493 is 394399033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315169009 + 15824484 = 17753^2 + 3978^2 .

It is a cyclic number.

It is not a de Polignac number, because 330993493 - 2¹ = 330993491 is a prime.

Together with 330993491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330993491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165496746 + 165496747.

It is an arithmetic number, because the mean of its divisors is an integer number (165496747).

Almost surely, 2^330993493 is an apocalyptic number.

It is an amenable number.

330993493 is a deficient number, since it is larger than the sum of its proper divisors (1).

330993493 is an equidigital number, since it uses as much as digits as its factorization.

330993493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 43.

The square root of 330993493 is about 18193.2265692482. The cubic root of 330993493 is about 691.7351087512.

The spelling of 330993493 in words is "three hundred thirty million, nine hundred ninety-three thousand, four hundred ninety-three".