199886903730 has 48 divisors (see below), whose sum is σ = 520616251584. Its totient is φ = 53209810080.

The previous prime is 199886903729. The next prime is 199886903761. The reversal of 199886903730 is 37309688991.

199886903730 is a `hidden beast` number, since 19 + 98 + 86 + 90 + 373 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1893414 + ... + 1996193.

It is an arithmetic number, because the mean of its divisors is an integer number (10846171908).

Almost surely, 2^199886903730 is an apocalyptic number.

199886903730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199886903730 is an abundant number, since it is smaller than the sum of its proper divisors (320729347854).

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

199886903730 is a wasteful number, since it uses less digits than its factorization.

199886903730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890191 (or 3890188 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 199886903730 in words is "one hundred ninety-nine billion, eight hundred eighty-six million, nine hundred three thousand, seven hundred thirty".