166339916 has 12 divisors (see below), whose sum is σ = 292178880. Its totient is φ = 82860240.

The previous prime is 166339907. The next prime is 166339949. The reversal of 166339916 is 619933661.

It is a super-4 number, since 4×166339916⁴ (a number of 34 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 76220 + ... + 78371.

It is an arithmetic number, because the mean of its divisors is an integer number (24348240).

Almost surely, 2^166339916 is an apocalyptic number.

It is an amenable number.

166339916 is a deficient number, since it is larger than the sum of its proper divisors (125838964).

166339916 is a wasteful number, since it uses less digits than its factorization.

166339916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154864 (or 154862 counting only the distinct ones).

The product of its digits is 157464, while the sum is 44.

The square root of 166339916 is about 12897.2832798229. The cubic root of 166339916 is about 549.9613372271.

The spelling of 166339916 in words is "one hundred sixty-six million, three hundred thirty-nine thousand, nine hundred sixteen".