199581422 has 8 divisors (see below), whose sum is σ = 309695400. Its totient is φ = 96349624.

The previous prime is 199581401. The next prime is 199581433. The reversal of 199581422 is 224185991.

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

It is a self number, because there is not a number n which added to its sum of digits gives 199581422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720472 + ... + 1720587.

It is an arithmetic number, because the mean of its divisors is an integer number (38711925).

Almost surely, 2^199581422 is an apocalyptic number.

199581422 is a deficient number, since it is larger than the sum of its proper divisors (110113978).

199581422 is a wasteful number, since it uses less digits than its factorization.

199581422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441090.

The product of its digits is 51840, while the sum is 41.

The square root of 199581422 is about 14127.3289053522. The cubic root of 199581422 is about 584.3952861956.

The spelling of 199581422 in words is "one hundred ninety-nine million, five hundred eighty-one thousand, four hundred twenty-two".