7843398816 has 192 divisors, whose sum is σ = 23762350080. Its totient is φ = 2240317440.

The previous prime is 7843398737. The next prime is 7843398833. The reversal of 7843398816 is 6188933487.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4473396 + ... + 4475148.

It is an arithmetic number, because the mean of its divisors is an integer number (123762240).

Almost surely, 2^7843398816 is an apocalyptic number.

7843398816 is a gapful number since it is divisible by the number (76) 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 7843398816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11881175040).

7843398816 is an abundant number, since it is smaller than the sum of its proper divisors (15918951264).

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

7843398816 is a wasteful number, since it uses less digits than its factorization.

7843398816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019 (or 2011 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 57.

The square root of 7843398816 is about 88562.9652620101. The cubic root of 7843398816 is about 1986.8638104938.

The spelling of 7843398816 in words is "seven billion, eight hundred forty-three million, three hundred ninety-eight thousand, eight hundred sixteen".