7281282618 has 56 divisors (see below), whose sum is σ = 16504754688. Its totient is φ = 2407921992.

The previous prime is 7281282601. The next prime is 7281282637. The reversal of 7281282618 is 8162821827.

It is a happy number.

7281282618 is a `hidden beast` number, since 7 + 2 + 8 + 1 + 28 + 2 + 618 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 165505 + ... + 204827.

Almost surely, 2^7281282618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7281282618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8252377344).

7281282618 is an abundant number, since it is smaller than the sum of its proper divisors (9223472070).

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

7281282618 is a wasteful number, since it uses less digits than its factorization.

7281282618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39470 (or 39455 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 7281282618 is about 85330.4319571863. The cubic root of 7281282618 is about 1938.2180308524.

The spelling of 7281282618 in words is "seven billion, two hundred eighty-one million, two hundred eighty-two thousand, six hundred eighteen".