188199979982 has 12 divisors (see below), whose sum is σ = 328389761160. Its totient is φ = 80657134236.

The previous prime is 188199979973. The next prime is 188199979991. The reversal of 188199979982 is 289979991881.

It is an interprime number because it is at equal distance from previous prime (188199979973) and next prime (188199979991).

It is a junction number, because it is equal to n+sod(n) for n = 188199979897 and 188199979906.

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 5 ways as a sum of consecutive naturals, for example, 960203882 + ... + 960204077.

It is an arithmetic number, because the mean of its divisors is an integer number (27365813430).

Almost surely, 2^188199979982 is an apocalyptic number.

188199979982 is a deficient number, since it is larger than the sum of its proper divisors (140189781178).

188199979982 is a wasteful number, since it uses less digits than its factorization.

188199979982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920407975 (or 1920407968 counting only the distinct ones).

The product of its digits is 423263232, while the sum is 80.

The spelling of 188199979982 in words is "one hundred eighty-eight billion, one hundred ninety-nine million, nine hundred seventy-nine thousand, nine hundred eighty-two".