199312078 has 16 divisors (see below), whose sum is σ = 342851040. Its totient is φ = 85126176.

The previous prime is 199312067. The next prime is 199312079. The reversal of 199312078 is 870213991.

199312078 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 199312078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199312079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20193 + ... + 28396.

It is an arithmetic number, because the mean of its divisors is an integer number (21428190).

Almost surely, 2^199312078 is an apocalyptic number.

199312078 is a deficient number, since it is larger than the sum of its proper divisors (143538962).

199312078 is a wasteful number, since it uses less digits than its factorization.

199312078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48891.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 199312078 is about 14117.7929578245. The cubic root of 199312078 is about 584.1322787087.

The spelling of 199312078 in words is "one hundred ninety-nine million, three hundred twelve thousand, seventy-eight".