199084434538 has 8 divisors (see below), whose sum is σ = 325774529280. Its totient is φ = 90492924780.

The previous prime is 199084434503. The next prime is 199084434599. The reversal of 199084434538 is 835434480991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×199084434538² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4524646218 + ... + 4524646261.

It is an arithmetic number, because the mean of its divisors is an integer number (40721816160).

Almost surely, 2^199084434538 is an apocalyptic number.

199084434538 is a deficient number, since it is larger than the sum of its proper divisors (126690094742).

199084434538 is a wasteful number, since it uses less digits than its factorization.

199084434538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9049292492.

The product of its (nonzero) digits is 14929920, while the sum is 58.

The spelling of 199084434538 in words is "one hundred ninety-nine billion, eighty-four million, four hundred thirty-four thousand, five hundred thirty-eight".