16143109 has 2 divisors, whose sum is σ = 16143110. Its totient is φ = 16143108.

The previous prime is 16143091. The next prime is 16143119. The reversal of 16143109 is 90134161.

16143109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (16143091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13653025 + 2490084 = 3695^2 + 1578^2 .

It is a cyclic number.

It is not a de Polignac number, because 16143109 - 2⁹ = 16142597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16143119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8071554 + 8071555.

It is an arithmetic number, because the mean of its divisors is an integer number (8071555).

Almost surely, 2^16143109 is an apocalyptic number.

It is an amenable number.

16143109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16143109 is an equidigital number, since it uses as much as digits as its factorization.

16143109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 16143109 is about 4017.8488025310. The cubic root of 16143109 is about 252.7332563362.

The spelling of 16143109 in words is "sixteen million, one hundred forty-three thousand, one hundred nine".