493105189 has 4 divisors (see below), whose sum is σ = 509011840. Its totient is φ = 477198540.

The previous prime is 493105177. The next prime is 493105259. The reversal of 493105189 is 981501394.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-493105189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493105159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7953279 + ... + 7953340.

It is an arithmetic number, because the mean of its divisors is an integer number (127252960).

Almost surely, 2^493105189 is an apocalyptic number.

It is an amenable number.

493105189 is a deficient number, since it is larger than the sum of its proper divisors (15906651).

493105189 is a wasteful number, since it uses less digits than its factorization.

493105189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15906650.

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

The square root of 493105189 is about 22205.9719219853. The cubic root of 493105189 is about 790.0353501246.

The spelling of 493105189 in words is "four hundred ninety-three million, one hundred five thousand, one hundred eighty-nine".