489643019 has 8 divisors (see below), whose sum is σ = 494887680. Its totient is φ = 484425000.

The previous prime is 489643009. The next prime is 489643057. The reversal of 489643019 is 910346984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489643019 is a prime.

It is a super-2 number, since 2×489643019² = 479500572110868722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489643009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31442 + ... + 44360.

It is an arithmetic number, because the mean of its divisors is an integer number (61860960).

Almost surely, 2^489643019 is an apocalyptic number.

489643019 is a deficient number, since it is larger than the sum of its proper divisors (5244661).

489643019 is a wasteful number, since it uses less digits than its factorization.

489643019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13321.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 489643019 is about 22127.8787731676. The cubic root of 489643019 is about 788.1820178489.

The spelling of 489643019 in words is "four hundred eighty-nine million, six hundred forty-three thousand, nineteen".