16199805 has 8 divisors (see below), whose sum is σ = 25919712. Its totient is φ = 8639888.

The previous prime is 16199803. The next prime is 16199867. The reversal of 16199805 is 50899161.

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

It is a cyclic number.

It is not a de Polignac number, because 16199805 - 2¹ = 16199803 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16199801) 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, 539979 + ... + 540008.

It is an arithmetic number, because the mean of its divisors is an integer number (3239964).

Almost surely, 2^16199805 is an apocalyptic number.

16199805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16199805 is a deficient number, since it is larger than the sum of its proper divisors (9719907).

16199805 is a wasteful number, since it uses less digits than its factorization.

16199805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079995.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 16199805 is about 4024.8981353570. The cubic root of 16199805 is about 253.0287843434.

The spelling of 16199805 in words is "sixteen million, one hundred ninety-nine thousand, eight hundred five".