166666382 has 4 divisors (see below), whose sum is σ = 249999576. Its totient is φ = 83333190.

The previous prime is 166666301. The next prime is 166666399. The reversal of 166666382 is 283666661.

166666382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 283666661 = 29 ⋅9781609.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41666594 + ... + 41666597.

It is an arithmetic number, because the mean of its divisors is an integer number (62499894).

Almost surely, 2^166666382 is an apocalyptic number.

166666382 is a deficient number, since it is larger than the sum of its proper divisors (83333194).

166666382 is an equidigital number, since it uses as much as digits as its factorization.

166666382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83333193.

The product of its digits is 373248, while the sum is 44.

The square root of 166666382 is about 12909.9334622608. The cubic root of 166666382 is about 550.3208948327.

The spelling of 166666382 in words is "one hundred sixty-six million, six hundred sixty-six thousand, three hundred eighty-two".