6780291618 has 16 divisors (see below), whose sum is σ = 13565614176. Its totient is φ = 2259258720.

The previous prime is 6780291589. The next prime is 6780291631. The reversal of 6780291618 is 8161920876.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191988 + ... + 224543.

It is an arithmetic number, because the mean of its divisors is an integer number (847850886).

Almost surely, 2^6780291618 is an apocalyptic number.

6780291618 is an abundant number, since it is smaller than the sum of its proper divisors (6785322558).

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

6780291618 is a wasteful number, since it uses less digits than its factorization.

6780291618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419249.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 6780291618 is about 82342.5261817975. The cubic root of 6780291618 is about 1892.7043969640.

The spelling of 6780291618 in words is "six billion, seven hundred eighty million, two hundred ninety-one thousand, six hundred eighteen".