84198661830 has 48 divisors (see below), whose sum is σ = 223574330304. Its totient is φ = 21975252480.

The previous prime is 84198661801. The next prime is 84198661849. The reversal of 84198661830 is 3816689148.

84198661830 is a `hidden beast` number, since 8 + 4 + 19 + 8 + 6 + 618 + 3 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9948331 + ... + 9956790.

It is an arithmetic number, because the mean of its divisors is an integer number (4657798548).

Almost surely, 2^84198661830 is an apocalyptic number.

84198661830 is an abundant number, since it is smaller than the sum of its proper divisors (139375668474).

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

84198661830 is a wasteful number, since it uses less digits than its factorization.

84198661830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19905181 (or 19905178 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 84198661830 in words is "eighty-four billion, one hundred ninety-eight million, six hundred sixty-one thousand, eight hundred thirty".