166166533 has 16 divisors (see below), whose sum is σ = 188903680. Its totient is φ = 144897984.

The previous prime is 166166531. The next prime is 166166543. The reversal of 166166533 is 335661661.

It is a cyclic number.

It is not a de Polignac number, because 166166533 - 2¹ = 166166531 is a prime.

It is a super-2 number, since 2×166166533² = 55222633378480178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166166492 and 166166501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166166531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113635 + ... + 115087.

It is an arithmetic number, because the mean of its divisors is an integer number (11806480).

Almost surely, 2^166166533 is an apocalyptic number.

166166533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166166533 is a deficient number, since it is larger than the sum of its proper divisors (22737147).

166166533 is a wasteful number, since it uses less digits than its factorization.

166166533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948.

The product of its digits is 58320, while the sum is 37.

The square root of 166166533 is about 12890.5598404414. The cubic root of 166166533 is about 549.7701882865.

The spelling of 166166533 in words is "one hundred sixty-six million, one hundred sixty-six thousand, five hundred thirty-three".