199430199428 has 24 divisors (see below), whose sum is σ = 366411127488. Its totient is φ = 94794502176.

The previous prime is 199430199407. The next prime is 199430199443. The reversal of 199430199428 is 824991034991.

199430199428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6634451 + ... + 6664442.

It is an arithmetic number, because the mean of its divisors is an integer number (15267130312).

Almost surely, 2^199430199428 is an apocalyptic number.

It is an amenable number.

199430199428 is a deficient number, since it is larger than the sum of its proper divisors (166980928060).

199430199428 is a wasteful number, since it uses less digits than its factorization.

199430199428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13299083 (or 13299081 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 59.

The spelling of 199430199428 in words is "one hundred ninety-nine billion, four hundred thirty million, one hundred ninety-nine thousand, four hundred twenty-eight".