166381708 has 24 divisors (see below), whose sum is σ = 306931520. Its totient is φ = 78699600.

The previous prime is 166381697. The next prime is 166381741. The reversal of 166381708 is 807183661.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 78835 + ... + 80917.

Almost surely, 2^166381708 is an apocalyptic number.

It is an amenable number.

166381708 is a deficient number, since it is larger than the sum of its proper divisors (140549812).

166381708 is a wasteful number, since it uses less digits than its factorization.

166381708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3155 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 166381708 is about 12898.9033642399. The cubic root of 166381708 is about 550.0073916362.

The spelling of 166381708 in words is "one hundred sixty-six million, three hundred eighty-one thousand, seven hundred eight".