166075139 has 2 divisors, whose sum is σ = 166075140. Its totient is φ = 166075138.

The previous prime is 166075103. The next prime is 166075183. The reversal of 166075139 is 931570661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166075139 - 2¹² = 166071043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166075439) 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 as a sum of consecutive naturals, namely, 83037569 + 83037570.

It is an arithmetic number, because the mean of its divisors is an integer number (83037570).

Almost surely, 2^166075139 is an apocalyptic number.

166075139 is a deficient number, since it is larger than the sum of its proper divisors (1).

166075139 is an equidigital number, since it uses as much as digits as its factorization.

166075139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 166075139 is about 12887.0143555441. The cubic root of 166075139 is about 549.6693759459.

The spelling of 166075139 in words is "one hundred sixty-six million, seventy-five thousand, one hundred thirty-nine".