493851789 has 32 divisors (see below), whose sum is σ = 752313600. Its totient is φ = 320060160.

The previous prime is 493851779. The next prime is 493851811. The reversal of 493851789 is 987158394.

493851789 is a `hidden beast` number, since 49 + 3 + 8 + 517 + 89 = 666.

It is not a de Polignac number, because 493851789 - 2¹⁵ = 493819021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493851719) 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 in 31 ways as a sum of consecutive naturals, for example, 138177 + ... + 141705.

It is an arithmetic number, because the mean of its divisors is an integer number (23509800).

Almost surely, 2^493851789 is an apocalyptic number.

It is an amenable number.

493851789 is a deficient number, since it is larger than the sum of its proper divisors (258461811).

493851789 is a wasteful number, since it uses less digits than its factorization.

493851789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682 (or 3676 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 493851789 is about 22222.7763567021. The cubic root of 493851789 is about 790.4338742580.

The spelling of 493851789 in words is "four hundred ninety-three million, eight hundred fifty-one thousand, seven hundred eighty-nine".