199390415819 has 16 divisors (see below), whose sum is σ = 228798123456. Its totient is φ = 170214912000.

The previous prime is 199390415789. The next prime is 199390415821. The reversal of 199390415819 is 918514093991.

It is a de Polignac number, because none of the positive numbers 2^k-199390415819 is a prime.

It is a super-2 number, since 2×199390415819² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199390414819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1714859 + ... + 1827435.

It is an arithmetic number, because the mean of its divisors is an integer number (14299882716).

Almost surely, 2^199390415819 is an apocalyptic number.

199390415819 is a deficient number, since it is larger than the sum of its proper divisors (29407707637).

199390415819 is a wasteful number, since it uses less digits than its factorization.

199390415819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113606.

The product of its (nonzero) digits is 3149280, while the sum is 59.

The spelling of 199390415819 in words is "one hundred ninety-nine billion, three hundred ninety million, four hundred fifteen thousand, eight hundred nineteen".