166135733 has 2 divisors, whose sum is σ = 166135734. Its totient is φ = 166135732.

The previous prime is 166135709. The next prime is 166135759. The reversal of 166135733 is 337531661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153190129 + 12945604 = 12377^2 + 3598^2 .

It is a cyclic number.

It is not a de Polignac number, because 166135733 - 2⁸ = 166135477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166135693 and 166135702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166135763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83067866 + 83067867.

It is an arithmetic number, because the mean of its divisors is an integer number (83067867).

Almost surely, 2^166135733 is an apocalyptic number.

It is an amenable number.

166135733 is a deficient number, since it is larger than the sum of its proper divisors (1).

166135733 is an equidigital number, since it uses as much as digits as its factorization.

166135733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 35.

The square root of 166135733 is about 12889.3651123707. The cubic root of 166135733 is about 549.7362184134.

The spelling of 166135733 in words is "one hundred sixty-six million, one hundred thirty-five thousand, seven hundred thirty-three".