7681244418 has 160 divisors (see below), whose sum is σ = 18957312000. Its totient is φ = 2315420640.

The previous prime is 7681244407. The next prime is 7681244443. The reversal of 7681244418 is 8144421867.

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 79 ways as a sum of consecutive naturals, for example, 7537513 + ... + 7538531.

It is an arithmetic number, because the mean of its divisors is an integer number (118483200).

Almost surely, 2^7681244418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7681244418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9478656000).

7681244418 is an abundant number, since it is smaller than the sum of its proper divisors (11276067582).

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

7681244418 is a wasteful number, since it uses less digits than its factorization.

7681244418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1153 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 7681244418 is about 87642.7088695917. The cubic root of 7681244418 is about 1973.0762161641.

The spelling of 7681244418 in words is "seven billion, six hundred eighty-one million, two hundred forty-four thousand, four hundred eighteen".