199997385182 has 16 divisors (see below), whose sum is σ = 354675166560. Its totient is φ = 82757538528.

The previous prime is 199997385179. The next prime is 199997385191. The reversal of 199997385182 is 281583799991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246301793 + ... + 246302604.

It is an arithmetic number, because the mean of its divisors is an integer number (22167197910).

Almost surely, 2^199997385182 is an apocalyptic number.

199997385182 is a deficient number, since it is larger than the sum of its proper divisors (154677781378).

199997385182 is a wasteful number, since it uses less digits than its factorization.

199997385182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492604435.

The product of its digits is 88179840, while the sum is 71.

The spelling of 199997385182 in words is "one hundred ninety-nine billion, nine hundred ninety-seven million, three hundred eighty-five thousand, one hundred eighty-two".