166134109 has 2 divisors, whose sum is σ = 166134110. Its totient is φ = 166134108.

The previous prime is 166134061. The next prime is 166134113. The reversal of 166134109 is 901431661.

166134109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162486009 + 3648100 = 12747^2 + 1910^2 .

It is a cyclic number.

It is not a de Polignac number, because 166134109 - 2¹³ = 166125917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166134179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83067054 + 83067055.

It is an arithmetic number, because the mean of its divisors is an integer number (83067055).

Almost surely, 2^166134109 is an apocalyptic number.

It is an amenable number.

166134109 is a deficient number, since it is larger than the sum of its proper divisors (1).

166134109 is an equidigital number, since it uses as much as digits as its factorization.

166134109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 166134109 is about 12889.3021145444. The cubic root of 166134109 is about 549.7344271581.

The spelling of 166134109 in words is "one hundred sixty-six million, one hundred thirty-four thousand, one hundred nine".