16071109 has 2 divisors, whose sum is σ = 16071110. Its totient is φ = 16071108.

The previous prime is 16071073. The next prime is 16071149. The reversal of 16071109 is 90117061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14516100 + 1555009 = 3810^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 16071109 - 2¹¹ = 16069061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16071149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8035554 + 8035555.

It is an arithmetic number, because the mean of its divisors is an integer number (8035555).

Almost surely, 2^16071109 is an apocalyptic number.

It is an amenable number.

16071109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16071109 is an equidigital number, since it uses as much as digits as its factorization.

16071109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 16071109 is about 4008.8787709284. The cubic root of 16071109 is about 252.3569571795.

The spelling of 16071109 in words is "sixteen million, seventy-one thousand, one hundred nine".