489191768 has 16 divisors (see below), whose sum is σ = 987791280. Its totient is φ = 225780768.

The previous prime is 489191767. The next prime is 489191797. The reversal of 489191768 is 867191984.

It is a super-3 number, since 3×489191768³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489191767) 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, 2351780 + ... + 2351987.

It is an arithmetic number, because the mean of its divisors is an integer number (61736955).

Almost surely, 2^489191768 is an apocalyptic number.

It is an amenable number.

489191768 is an abundant number, since it is smaller than the sum of its proper divisors (498599512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489191768 is a wasteful number, since it uses less digits than its factorization.

489191768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703786 (or 4703782 counting only the distinct ones).

The product of its digits is 870912, while the sum is 53.

The square root of 489191768 is about 22117.6799868341. The cubic root of 489191768 is about 787.9398160637.

The spelling of 489191768 in words is "four hundred eighty-nine million, one hundred ninety-one thousand, seven hundred sixty-eight".