166830393 has 16 divisors (see below), whose sum is σ = 235188800. Its totient is φ = 104898240.

The previous prime is 166830371. The next prime is 166830421. The reversal of 166830393 is 393038661.

166830393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166830393 - 2⁶ = 166830329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166830343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6663 + ... + 19443.

It is an arithmetic number, because the mean of its divisors is an integer number (14699300).

Almost surely, 2^166830393 is an apocalyptic number.

It is an amenable number.

166830393 is a deficient number, since it is larger than the sum of its proper divisors (68358407).

166830393 is a wasteful number, since it uses less digits than its factorization.

166830393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13032.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 166830393 is about 12916.2840244398. The cubic root of 166830393 is about 550.5013533201.

The spelling of 166830393 in words is "one hundred sixty-six million, eight hundred thirty thousand, three hundred ninety-three".