16315999 has 8 divisors (see below), whose sum is σ = 18674208. Its totient is φ = 13964640.

The previous prime is 16315973. The next prime is 16316017. The reversal of 16315999 is 99951361.

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 16315999 - 2⁵ = 16315967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16315939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5349 + ... + 7825.

It is an arithmetic number, because the mean of its divisors is an integer number (2334276).

Almost surely, 2^16315999 is an apocalyptic number.

16315999 is a deficient number, since it is larger than the sum of its proper divisors (2358209).

16315999 is an equidigital number, since it uses as much as digits as its factorization.

16315999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425.

The product of its digits is 65610, while the sum is 43.

The square root of 16315999 is about 4039.3067474506. The cubic root of 16315999 is about 253.6322980538.

The spelling of 16315999 in words is "sixteen million, three hundred fifteen thousand, nine hundred ninety-nine".