166160591 has 2 divisors, whose sum is σ = 166160592. Its totient is φ = 166160590.

The previous prime is 166160573. The next prime is 166160609. The reversal of 166160591 is 195061661.

It is a balanced prime because it is at equal distance from previous prime (166160573) and next prime (166160609).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166160591 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166165591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83080295 + 83080296.

It is an arithmetic number, because the mean of its divisors is an integer number (83080296).

Almost surely, 2^166160591 is an apocalyptic number.

166160591 is a deficient number, since it is larger than the sum of its proper divisors (1).

166160591 is an equidigital number, since it uses as much as digits as its factorization.

166160591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 166160591 is about 12890.3293596401. The cubic root of 166160591 is about 549.7636350748.

The spelling of 166160591 in words is "one hundred sixty-six million, one hundred sixty thousand, five hundred ninety-one".