493881189 has 24 divisors (see below), whose sum is σ = 678874560. Its totient is φ = 319343232.

The previous prime is 493881169. The next prime is 493881197. The reversal of 493881189 is 981188394.

It is not a de Polignac number, because 493881189 - 2⁹ = 493880677 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 (493881149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 867697 + ... + 868265.

It is an arithmetic number, because the mean of its divisors is an integer number (28286440).

Almost surely, 2^493881189 is an apocalyptic number.

It is an amenable number.

493881189 is a deficient number, since it is larger than the sum of its proper divisors (184993371).

493881189 is a wasteful number, since it uses less digits than its factorization.

493881189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 728 counting only the distinct ones).

The product of its digits is 497664, while the sum is 51.

The square root of 493881189 is about 22223.4378303628. The cubic root of 493881189 is about 790.4495593247.

The spelling of 493881189 in words is "four hundred ninety-three million, eight hundred eighty-one thousand, one hundred eighty-nine".