199138194146 has 8 divisors (see below), whose sum is σ = 298726326864. Its totient is φ = 99562751860.

The previous prime is 199138194131. The next prime is 199138194161. The reversal of 199138194146 is 641491831991.

It is an interprime number because it is at equal distance from previous prime (199138194131) and next prime (199138194161).

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

It is a junction number, because it is equal to n+sod(n) for n = 199138194091 and 199138194100.

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, 3133280 + ... + 3196203.

It is an arithmetic number, because the mean of its divisors is an integer number (37340790858).

Almost surely, 2^199138194146 is an apocalyptic number.

199138194146 is a deficient number, since it is larger than the sum of its proper divisors (99588132718).

199138194146 is a wasteful number, since it uses less digits than its factorization.

199138194146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6345216.

The product of its digits is 1679616, while the sum is 56.

The spelling of 199138194146 in words is "one hundred ninety-nine billion, one hundred thirty-eight million, one hundred ninety-four thousand, one hundred forty-six".