199001501606 has 4 divisors (see below), whose sum is σ = 298502252412. Its totient is φ = 99500750802.

The previous prime is 199001501561. The next prime is 199001501653. The reversal of 199001501606 is 606105100991.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 199001501606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49750375400 + ... + 49750375403.

It is an arithmetic number, because the mean of its divisors is an integer number (74625563103).

Almost surely, 2^199001501606 is an apocalyptic number.

199001501606 is a deficient number, since it is larger than the sum of its proper divisors (99500750806).

199001501606 is an equidigital number, since it uses as much as digits as its factorization.

199001501606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99500750805.

The product of its (nonzero) digits is 14580, while the sum is 38.

The spelling of 199001501606 in words is "one hundred ninety-nine billion, one million, five hundred one thousand, six hundred six".