16159997 has 8 divisors (see below), whose sum is σ = 18676800. Its totient is φ = 13695264.

The previous prime is 16159991. The next prime is 16160033. The reversal of 16159997 is 79995161.

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 16159997 - 2⁴ = 16159981 is a prime.

It is a super-2 number, since 2×16159997² = 522291006080018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16159991) 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, 12347 + ... + 13592.

It is an arithmetic number, because the mean of its divisors is an integer number (2334600).

Almost surely, 2^16159997 is an apocalyptic number.

It is an amenable number.

16159997 is a deficient number, since it is larger than the sum of its proper divisors (2516803).

16159997 is an equidigital number, since it uses as much as digits as its factorization.

16159997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26035.

The product of its digits is 153090, while the sum is 47.

The square root of 16159997 is about 4019.9498753094. The cubic root of 16159997 is about 252.8213573278.

The spelling of 16159997 in words is "sixteen million, one hundred fifty-nine thousand, nine hundred ninety-seven".