16143894 has 96 divisors (see below), whose sum is σ = 40845600. Its totient is φ = 4717440.

The previous prime is 16143857. The next prime is 16143899. The reversal of 16143894 is 49834161.

16143894 is a `hidden beast` number, since 1 + 614 + 38 + 9 + 4 = 666.

It is an alternating number because its digits alternate between odd and even.

Its product of digits (20736) is a multiple of the sum of its prime divisors (108).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16143899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 264624 + ... + 264684.

It is an arithmetic number, because the mean of its divisors is an integer number (425475).

Almost surely, 2^16143894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16143894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20422800).

16143894 is an abundant number, since it is smaller than the sum of its proper divisors (24701706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16143894 is a wasteful number, since it uses less digits than its factorization.

16143894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 108 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 16143894 is about 4017.9464904351. The cubic root of 16143894 is about 252.7373528703.

The spelling of 16143894 in words is "sixteen million, one hundred forty-three thousand, eight hundred ninety-four".