7818874908 has 144 divisors (see below), whose sum is σ = 20967408000. Its totient is φ = 2260327680.

The previous prime is 7818874867. The next prime is 7818874919. The reversal of 7818874908 is 8094788187.

It is a super-2 number, since 2×7818874908² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5046918 + ... + 5048466.

It is an arithmetic number, because the mean of its divisors is an integer number (145607000).

Almost surely, 2^7818874908 is an apocalyptic number.

7818874908 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7818874908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10483704000).

7818874908 is an abundant number, since it is smaller than the sum of its proper divisors (13148533092).

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

7818874908 is a wasteful number, since it uses less digits than its factorization.

7818874908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732 (or 1717 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 60.

The square root of 7818874908 is about 88424.4022202016. The cubic root of 7818874908 is about 1984.7908767970.

The spelling of 7818874908 in words is "seven billion, eight hundred eighteen million, eight hundred seventy-four thousand, nine hundred eight".