166478382 has 96 divisors (see below), whose sum is σ = 455790240. Its totient is φ = 44755200.

The previous prime is 166478381. The next prime is 166478383. The reversal of 166478382 is 283874661.

It is an interprime number because it is at equal distance from previous prime (166478381) and next prime (166478383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166478381) 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 47 ways as a sum of consecutive naturals, for example, 43132 + ... + 46832.

It is an arithmetic number, because the mean of its divisors is an integer number (4747815).

Almost surely, 2^166478382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166478382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227895120).

166478382 is an abundant number, since it is smaller than the sum of its proper divisors (289311858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166478382 is a wasteful number, since it uses less digits than its factorization.

166478382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743 (or 3730 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 166478382 is about 12902.6501928867. The cubic root of 166478382 is about 550.1138959716.

The spelling of 166478382 in words is "one hundred sixty-six million, four hundred seventy-eight thousand, three hundred eighty-two".