199478849119 has 4 divisors (see below), whose sum is σ = 217613289960. Its totient is φ = 181344408280.

The previous prime is 199478849111. The next prime is 199478849149. The reversal of 199478849119 is 911948874991.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 199478849119 - 2³ = 199478849111 is a prime.

It is a super-2 number, since 2×199478849119² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199478849111) 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, 9067220404 + ... + 9067220425.

It is an arithmetic number, because the mean of its divisors is an integer number (54403322490).

Almost surely, 2^199478849119 is an apocalyptic number.

199478849119 is a deficient number, since it is larger than the sum of its proper divisors (18134440841).

199478849119 is a wasteful number, since it uses less digits than its factorization.

199478849119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18134440840.

The product of its digits is 47029248, while the sum is 70.

The spelling of 199478849119 in words is "one hundred ninety-nine billion, four hundred seventy-eight million, eight hundred forty-nine thousand, one hundred nineteen".