493910645 has 4 divisors (see below), whose sum is σ = 592692780. Its totient is φ = 395128512.

The previous prime is 493910633. The next prime is 493910731. The reversal of 493910645 is 546019394.

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 85951441 + 407959204 = 9271^2 + 20198^2 .

It is a cyclic number.

It is not a de Polignac number, because 493910645 - 2²⁴ = 477133429 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 49391060 + ... + 49391069.

It is an arithmetic number, because the mean of its divisors is an integer number (148173195).

Almost surely, 2^493910645 is an apocalyptic number.

It is an amenable number.

493910645 is a deficient number, since it is larger than the sum of its proper divisors (98782135).

493910645 is an equidigital number, since it uses as much as digits as its factorization.

493910645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98782134.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 493910645 is about 22224.1005442290. The cubic root of 493910645 is about 790.4652736435.

The spelling of 493910645 in words is "four hundred ninety-three million, nine hundred ten thousand, six hundred forty-five".