7818120704 has 40 divisors (see below), whose sum is σ = 15656687640. Its totient is φ = 3900123136.

The previous prime is 7818120691. The next prime is 7818120707. The reversal of 7818120704 is 4070218187.

It is a super-2 number, since 2×7818120704² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7818120707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209582 + ... + 244050.

It is an arithmetic number, because the mean of its divisors is an integer number (391417191).

Almost surely, 2^7818120704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7818120704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7828343820).

7818120704 is an abundant number, since it is smaller than the sum of its proper divisors (7838566936).

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

7818120704 is an equidigital number, since it uses as much as digits as its factorization.

7818120704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34930 (or 34914 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 7818120704 is about 88420.1374348627. The cubic root of 7818120704 is about 1984.7270574977.

The spelling of 7818120704 in words is "seven billion, eight hundred eighteen million, one hundred twenty thousand, seven hundred four".