489028645818 has 12 divisors (see below), whose sum is σ = 1059562065978. Its totient is φ = 163009548600.

The previous prime is 489028645813. The next prime is 489028645829. The reversal of 489028645818 is 818546820984.

489028645818 is a `hidden beast` number, since 4 + 8 + 90 + 2 + 86 + 458 + 18 = 666.

It can be written as a sum of positive squares in only one way, i.e., 471223212849 + 17805432969 = 686457^2 + 133437^2 .

It is not an unprimeable number, because it can be changed into a prime (489028645813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13584129033 + ... + 13584129068.

Almost surely, 2^489028645818 is an apocalyptic number.

489028645818 is an abundant number, since it is smaller than the sum of its proper divisors (570533420160).

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

489028645818 is a wasteful number, since it uses less digits than its factorization.

489028645818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27168258109 (or 27168258106 counting only the distinct ones).

The product of its (nonzero) digits is 35389440, while the sum is 63.

The spelling of 489028645818 in words is "four hundred eighty-nine billion, twenty-eight million, six hundred forty-five thousand, eight hundred eighteen".