989008618 has 24 divisors (see below), whose sum is σ = 1608295500. Its totient is φ = 455929344.

The previous prime is 989008591. The next prime is 989008637. The reversal of 989008618 is 816800989.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 88228449 + 900780169 = 9393^2 + 30013^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 522618 + ... + 524506.

Almost surely, 2^989008618 is an apocalyptic number.

989008618 is a deficient number, since it is larger than the sum of its proper divisors (619286882).

989008618 is a wasteful number, since it uses less digits than its factorization.

989008618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466 (or 3453 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 989008618 is about 31448.5074049628. The cubic root of 989008618 is about 996.3227000405.

The spelling of 989008618 in words is "nine hundred eighty-nine million, eight thousand, six hundred eighteen".