8219863850 has 24 divisors (see below), whose sum is σ = 16678852128. Its totient is φ = 2989041200.

The previous prime is 8219863843. The next prime is 8219863853. The reversal of 8219863850 is 583689128.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (8219863853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7472054 + ... + 7473153.

It is an arithmetic number, because the mean of its divisors is an integer number (694952172).

Almost surely, 2^8219863850 is an apocalyptic number.

8219863850 is an abundant number, since it is smaller than the sum of its proper divisors (8458988278).

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

8219863850 is a wasteful number, since it uses less digits than its factorization.

8219863850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14945230 (or 14945225 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 50.

The square root of 8219863850 is about 90663.4648025322. The cubic root of 8219863850 is about 2018.1566566104.

The spelling of 8219863850 in words is "eight billion, two hundred nineteen million, eight hundred sixty-three thousand, eight hundred fifty".