7881863850 has 288 divisors, whose sum is σ = 25891557120. Its totient is φ = 1677957120.

The previous prime is 7881863849. The next prime is 7881863851. The reversal of 7881863850 is 583681887.

It is a happy number.

7881863850 is a `hidden beast` number, since 7 + 88 + 186 + 385 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (7881863849) and next prime (7881863851).

It is not an unprimeable number, because it can be changed into a prime (7881863851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5514936 + ... + 5516364.

It is an arithmetic number, because the mean of its divisors is an integer number (89901240).

Almost surely, 2^7881863850 is an apocalyptic number.

7881863850 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7881863850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12945778560).

7881863850 is an abundant number, since it is smaller than the sum of its proper divisors (18009693270).

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

7881863850 is a wasteful number, since it uses less digits than its factorization.

7881863850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The square root of 7881863850 is about 88779.8617367700. The cubic root of 7881863850 is about 1990.1064604712.

The spelling of 7881863850 in words is "seven billion, eight hundred eighty-one million, eight hundred sixty-three thousand, eight hundred fifty".