166340393 has 8 divisors (see below), whose sum is σ = 183783168. Its totient is φ = 149748544.

The previous prime is 166340329. The next prime is 166340429. The reversal of 166340393 is 393043661.

166340393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166340393 - 2⁶ = 166340329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166340593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212321 + ... + 213102.

It is an arithmetic number, because the mean of its divisors is an integer number (22972896).

Almost surely, 2^166340393 is an apocalyptic number.

It is an amenable number.

166340393 is a deficient number, since it is larger than the sum of its proper divisors (17442775).

166340393 is a wasteful number, since it uses less digits than its factorization.

166340393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425463.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 166340393 is about 12897.3017720762. The cubic root of 166340393 is about 549.9618629204.

The spelling of 166340393 in words is "one hundred sixty-six million, three hundred forty thousand, three hundred ninety-three".