199504996018 has 8 divisors (see below), whose sum is σ = 299263974912. Its totient is φ = 99750337716.

The previous prime is 199504996013. The next prime is 199504996043. The reversal of 199504996018 is 810699405991.

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

It is a super-2 number, since 2×199504996018² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199504996013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962130 + ... + 1150957.

It is an arithmetic number, because the mean of its divisors is an integer number (37407996864).

Almost surely, 2^199504996018 is an apocalyptic number.

199504996018 is a deficient number, since it is larger than the sum of its proper divisors (99758978894).

199504996018 is a wasteful number, since it uses less digits than its factorization.

199504996018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160296.

The product of its (nonzero) digits is 6298560, while the sum is 61.

The spelling of 199504996018 in words is "one hundred ninety-nine billion, five hundred four million, nine hundred ninety-six thousand, eighteen".