489318361992 has 80 divisors (see below), whose sum is σ = 1375639937100. Its totient is φ = 162499720320.

The previous prime is 489318361991. The next prime is 489318361997. The reversal of 489318361992 is 299163813984.

489318361992 is a `hidden beast` number, since 4 + 8 + 9 + 3 + 1 + 8 + 3 + 619 + 9 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 479824977636 + 9493384356 = 692694^2 + 97434^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (489318361991) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1229259 + ... + 1577882.

Almost surely, 2^489318361992 is an apocalyptic number.

It is an amenable number.

489318361992 is an abundant number, since it is smaller than the sum of its proper divisors (886321575108).

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

489318361992 is a wasteful number, since it uses less digits than its factorization.

489318361992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807428 (or 2807415 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The spelling of 489318361992 in words is "four hundred eighty-nine billion, three hundred eighteen million, three hundred sixty-one thousand, nine hundred ninety-two".