199374304943 has 16 divisors (see below), whose sum is σ = 226977244416. Its totient is φ = 173352527040.

The previous prime is 199374304939. The next prime is 199374304951. The reversal of 199374304943 is 349403473991.

It is a happy number.

It is not a de Polignac number, because 199374304943 - 2² = 199374304939 is a prime.

It is a super-2 number, since 2×199374304943² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199374304903) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3185396 + ... + 3247382.

It is an arithmetic number, because the mean of its divisors is an integer number (14186077776).

Almost surely, 2^199374304943 is an apocalyptic number.

199374304943 is a deficient number, since it is larger than the sum of its proper divisors (27602939473).

199374304943 is a wasteful number, since it uses less digits than its factorization.

199374304943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74734.

The product of its (nonzero) digits is 8817984, while the sum is 56.

The spelling of 199374304943 in words is "one hundred ninety-nine billion, three hundred seventy-four million, three hundred four thousand, nine hundred forty-three".