198709009830 has 24 divisors (see below), whose sum is σ = 516643425792. Its totient is φ = 52989069264.

The previous prime is 198709009799. The next prime is 198709009843. The reversal of 198709009830 is 38900907891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1103938854 + ... + 1103939033.

It is an arithmetic number, because the mean of its divisors is an integer number (21526809408).

Almost surely, 2^198709009830 is an apocalyptic number.

198709009830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198709009830 is an abundant number, since it is smaller than the sum of its proper divisors (317934415962).

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

198709009830 is a wasteful number, since it uses less digits than its factorization.

198709009830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207877900 (or 2207877897 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 198709009830 in words is "one hundred ninety-eight billion, seven hundred nine million, nine thousand, eight hundred thirty".