16143133 has 4 divisors (see below), whose sum is σ = 16303068. Its totient is φ = 15983200.

The previous prime is 16143131. The next prime is 16143139. The reversal of 16143133 is 33134161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33134161 = 101 ⋅328061.

It can be written as a sum of positive squares in 2 ways, for example, as 7064964 + 9078169 = 2658^2 + 3013^2 .

It is a cyclic number.

It is not a de Polignac number, because 16143133 - 2¹ = 16143131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16143131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79816 + ... + 80017.

It is an arithmetic number, because the mean of its divisors is an integer number (4075767).

It is a self-describing number.

Almost surely, 2^16143133 is an apocalyptic number.

It is an amenable number.

16143133 is a deficient number, since it is larger than the sum of its proper divisors (159935).

16143133 is a wasteful number, since it uses less digits than its factorization.

16143133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159934.

The product of its digits is 648, while the sum is 22.

The square root of 16143133 is about 4017.8517892028. The cubic root of 16143133 is about 252.7333815825.

Adding to 16143133 its reverse (33134161), we get a palindrome (49277294).

The spelling of 16143133 in words is "sixteen million, one hundred forty-three thousand, one hundred thirty-three".