166211741 has 2 divisors, whose sum is σ = 166211742. Its totient is φ = 166211740.

The previous prime is 166211711. The next prime is 166211783. The reversal of 166211741 is 147112661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163584100 + 2627641 = 12790^2 + 1621^2 .

It is a cyclic number.

It is not a de Polignac number, because 166211741 - 2²² = 162017437 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 (166211701) 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, 83105870 + 83105871.

It is an arithmetic number, because the mean of its divisors is an integer number (83105871).

Almost surely, 2^166211741 is an apocalyptic number.

It is an amenable number.

166211741 is a deficient number, since it is larger than the sum of its proper divisors (1).

166211741 is an equidigital number, since it uses as much as digits as its factorization.

166211741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

The square root of 166211741 is about 12892.3132524772. The cubic root of 166211741 is about 549.8200413999.

The spelling of 166211741 in words is "one hundred sixty-six million, two hundred eleven thousand, seven hundred forty-one".