166335393 has 16 divisors (see below), whose sum is σ = 256314240. Its totient is φ = 93979776.

The previous prime is 166335373. The next prime is 166335431. The reversal of 166335393 is 393533661.

It is not a de Polignac number, because 166335393 - 2⁹ = 166334881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166335373) 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 in 15 ways as a sum of consecutive naturals, for example, 42630 + ... + 46367.

It is an arithmetic number, because the mean of its divisors is an integer number (16019640).

Almost surely, 2^166335393 is an apocalyptic number.

It is an amenable number.

166335393 is a deficient number, since it is larger than the sum of its proper divisors (89978847).

166335393 is an equidigital number, since it uses as much as digits as its factorization.

166335393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89096.

The product of its digits is 131220, while the sum is 39.

The square root of 166335393 is about 12897.1079316256. The cubic root of 166335393 is about 549.9563524591.

The spelling of 166335393 in words is "one hundred sixty-six million, three hundred thirty-five thousand, three hundred ninety-three".