16159994 has 16 divisors (see below), whose sum is σ = 25656000. Its totient is φ = 7612704.

The previous prime is 16159991. The next prime is 16160033. The reversal of 16159994 is 49995161.

It is a super-2 number, since 2×16159994² = 522290812160072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 6494 + ... + 8630.

It is an arithmetic number, because the mean of its divisors is an integer number (1603500).

Almost surely, 2^16159994 is an apocalyptic number.

16159994 is a deficient number, since it is larger than the sum of its proper divisors (9496006).

16159994 is a wasteful number, since it uses less digits than its factorization.

16159994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357.

The product of its digits is 87480, while the sum is 44.

The square root of 16159994 is about 4019.9495021704. The cubic root of 16159994 is about 252.8213416829.

The spelling of 16159994 in words is "sixteen million, one hundred fifty-nine thousand, nine hundred ninety-four".