199527952818 has 8 divisors (see below), whose sum is σ = 399055905648. Its totient is φ = 66509317604.

The previous prime is 199527952711. The next prime is 199527952829. The reversal of 199527952818 is 818259725991.

It is a sphenic number, since it is the product of 3 distinct primes.

199527952818 is an admirable number.

It is a super-2 number, since 2×199527952818² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16627329396 + ... + 16627329407.

It is an arithmetic number, because the mean of its divisors is an integer number (49881988206).

Almost surely, 2^199527952818 is an apocalyptic number.

199527952818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199527952818 is a wasteful number, since it uses less digits than its factorization.

199527952818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33254658808.

The product of its digits is 32659200, while the sum is 66.

The spelling of 199527952818 in words is "one hundred ninety-nine billion, five hundred twenty-seven million, nine hundred fifty-two thousand, eight hundred eighteen".